Exhibit 4.10



SECOND AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



SECOND AMENDMENT, dated as of May 29, 2001 (the Amendment), to the REVOLVING CREDIT
AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES, INC.,a Pennsylvania corporation (the Borrower), a debtor and debtor-in-possession under Chapter 11 of the
Bankruptcy Code, the Guarantors named therein (the Guarantors), THE CHASE MANHATTAN BANK, a New York banking corporation (Chase), each of the other financial institutions party thereto (together
with Chase, the Banks) and THE CHASE MANHATTAN BANK, as Agent for the Banks (in such capacity, the Agent):



W I T N E S S E T H:



WHEREAS, the Borrower, the Guarantors, the Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as of
December 6, 2000, as amended by that certain First Amendment to Revolving Credit and Guaranty Agreement dated as of February 2, 2001 and that certain Letter Agreement dated February 28, 2001 (as the same may be further amended, modified or
supplemented from time to time, the Credit Agreement); and



WHEREAS, the Borrower and the Guarantors have requested that from and after the Effective Date (as hereinafter defined) of this Amendment, the Credit Agreement be amended subject to and upon the terms and
conditions set forth herein;



NOW, THEREFORE, the
parties hereto hereby agree as follows:



1. As used herein, all
terms that are defined in the Credit Agreement shall have the same meanings herein.



2. By its execution hereof, pursuant to Section 2.10 of the Credit Agreement, the Borrower hereby permanently reduces the Total Commitment from $300,000,000 to $200,000,000 and in order to reflect such permanent
reduction, the second paragraph of the Introductory Statement is hereby amended by deleting the amount $300,000,000 appearing therein and inserting in lieu thereof the amount $200,000,000.



3. The definition of the term Applicable Margin set forth in
Section 1.01 of the Credit Agreement is hereby amended in its entirety to read as follows:



Applicable Margin shall mean, for any day with respect to any ABR Loan or Eurodollar Loan, or with respect to any unreimbursed draws
under Letters of Credit (as provided for in Section 2.03(d)) or Letter of Credit Fees payable hereunder as the case may be, the applicable rate per annum



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set forth below under the caption ABR Spread, Eurodollar Spread, Unreimbursed L/C Rate, or (except as set forth in
Section 2.21) Letter of Credit Fee Rate as the case may be:



|          |   |  |                  |   |  |                       |   |  |                          |  
|--------- | - |  | ---------------- | - |  | --------------------- | - |  | ------------------------ | -
|ABRSpread |   |  | EurodollarSpread |   |  | Unreimbursed L/C Rate |   |  | Letter ofCredit Fee Rate |  
|.50       | % |  | 1.50             | % |  | .50                   | % |  | 1.50                     | %



4. The definition of
the term Borrowing Base set forth in Section 1.01 of the Credit Agreement is hereby amended by deleting the last sentence thereof in its entirety and inserting in lieu thereof the following:



Standards of eligibility and reserves of the Borrowing Base may be
revised and adjusted from time to time by the Agent in its sole discretion and consistent with its standard practice and the advance rates of the Borrowing Base may be adjusted from time to time by the Agent with the consent of the Required Banks,
(provided that the Agent may adjust the foregoing advance rates without the consent of any of the other Banks if the effect of such adjustment would be to decrease the foregoing advance rates) with any changes in such standards, reserves or advance
rates to be effective 10 days after delivery of notice thereof to the Borrower.



5. The definition of the term Required Banks appearing in Section 1.01 of the Credit Agreement is hereby amended in its entirety to read as follows:



Required Banks shall mean, at any time, Banks having
Commitments representing in excess of 50% of the Total Commitment or, if there are no Commitments in effect, Banks holding Loans representing in excess of 50% of the aggregate principal amount of such Loans outstanding.



6. In order to reflect the permanent reduction of the Total Commitment
referred to in paragraph 2 above, Section 2.01(a) of the Credit Agreement is hereby amended by deleting the amount $300,000,000 appearing in clause (i) thereof and inserting in lieu thereof the amount $200,000,000.



7. Section 2.03(b) of the Credit Agreement is hereby
amended by deleting the words except as the Agent may otherwise agree in writing, appearing in the first sentence thereof.



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8. Section 10.01 of the Credit Agreement is hereby amended by deleting the name E. Follin
Smith appearing in the first sentence thereof and inserting in lieu thereof the words Chief Financial Officer.



9. Section 10.10(a) of the Credit Agreement is hereby amended by deleting the second provided, further clause appearing
therein and inserting in lieu thereof the following:



and provided, further, that no such modification or amendment shall without the written consent of the Super-majority Banks (as defined in subsection (b) below) (A) release all or substantially all of the
Guarantors or (B) increase the Total Commitment (it being understood that, as set forth in clause (x) above, the written consent of a Bank shall at all times be required to increase its own Commitment)



10. Section 10.10(b) of the Credit Agreement is hereby amended by
deleting the last sentence thereof and inserting in lieu thereof the following:



As used herein, the term Super-majority Banks shall mean, at any time, Banks having Commitments representing at least 66-2/3% of the Total Commitment, or if there are no Commitments in effect, Banks
holding Loans representing at least 66-2/3% of the aggregate principal amount of the Loans outstanding.



11. Annex A to the Credit Agreement is hereby replaced in its entirety by Annex A hereto.



12. This Amendment shall not become effective until the date (the Effective Date) on which this Amendment
shall have been executed by the Borrower, the Guarantors and Banks representing the Required Banks, and the Agent shall have received evidence satisfactory to it of such execution.



13. Except to the extent hereby amended, the Credit Agreement and each of the Loan Documents remain in full force and effect
and are hereby ratified and affirmed.



14. The Borrower agrees
that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the preparation, execution and delivery of this Amendment, including the reasonable fees and disbursements of special counsel to the Agent.



15. This Amendment shall be limited precisely as written and shall not be
deemed (a) to be a consent granted pursuant to, or a waiver or modification of, any other term or condition of the Credit Agreement or any of the instruments or agreements referred to therein or (b) to prejudice any right or rights which
the Agent or the Banks



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may now have or have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever the
Credit Agreement is referred to in the Credit Agreement or any of the instruments, agreements or other documents or papers executed or delivered in connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by this
Amendment.



16. This Amendment may be executed in any number of
counterparts and by the different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



17. This Amendment shall be governed by, and construed in accordance with,
the laws of the State of New York.



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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of the
day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/s/    LEONARD A.
CAMPANAROName:

Leonard A. CampanaroTitle:

Senior Vice President &Chief Financial OfficerGUARANTORS:NITRAM LIQUIDATORS, INC.By:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

Assistant SecretaryDESSEAUX CORPORATION OF NORTH AMERICABy:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

President & Assistant SecretaryTHE CHASE MANHATTAN BANK,Individually and as AgentBy:

/s/    WILLIAM C. REPKOName:

William C. RepkoTitle:

Managing Director




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ANNEX A

to

REVOLVING CREDIT AND GUARANTY AGREEMENT



Dated as of December 6, 2000 (as amended)



|                                                                                                        |  |                  |             |                      |          |  
|------------------------------------------------------------------------------------------------------- |  | ---------------- | ----------- | -------------------- | -------- | -
|Bank                                                                                                    |  | CommitmentAmount |             | CommitmentPercentage |         
|The Chase Manhattan Bank 270 Park Avenue New York, New York 10017 Attn: Ms. Kelly Shield Vice President |  | $                | 200,000,000 |                      | 100.0000 | %
|                                                                                                        |  |                 
|Total                                                                                                   |  | $                | 200,000,000 |                      | 100.0000 | %
|                                                                                                        |  |                  |             |                      |          |  



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THIRD AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



THIRD AMENDMENT,dated as of June 4, 2001 (the Amendment), to the REVOLVING CREDIT AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES, INC., a Pennsylvania corporation (the
Borrower), a debtor and debtor-in-possession under Chapter 11 of the Bankruptcy Code, the Guarantors named therein (the Guarantors). THE CHASE MANHATTAN BANK, a New York banking corporation
(Chase), each of the other financial institutions party thereto (together with Chase, the Banks) and THE CHASE MANHATTAN BANK,as Agent for the Banks (in such capacity, the
Agent):



W I T N E S S E T H:



WHEREAS,the Borrower, the Guarantors, the
Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as of December 6, 2000, as amended by that certain First Amendment to Revolving Credit and Guaranty Agreement dated as of February 2, 2001, that
certain Letter Agreement dated February 28, 2001 and that certain Second Amendment to Revolving Credit and Guaranty Agreement dated as of May 29, 2001 (as the same may be further amended, modified or supplemented from time to time, the
Credit Agreement);



WHEREAS,Section 10.03(b) of the Credit Agreement provides that each Bank may assign to one or more Eligible Assignees all or a portion of its interests, rights and obligations under the Credit Agreement (including, without limitation, all or a
portion of its Commitment and the same portion of the related Loans at the time owing to it) by executing and delivering with such Eligible Assignee an Assignment and Acceptance in substantially the form of Exhibit C to the Credit Agreement (a copy
of which is annexed hereto as Schedule I); and



WHEREAS, Chase wishes to assign to each of the financial institutions (other than Chase) that is named on Annex A hereto (such financial institutions other than Chase, collectively the New Banks), and each
of the New Banks wishes to assume, a pro rata portion of Chases interests, rights and obligations under the Credit Agreement; and



WHEREAS,the Borrower, the Guarantors, Chase, the New Banks and the Agent have determined that the execution and delivery of this Amendment
to effectuate a reallocation of the Total Commitment among Chase and the New Banks will be more expeditious and administratively efficient than the execution and delivery of a separate Assignment and Acceptance between Chase and each of the New
Banks; and



WHEREAS,upon the occurrence of the
Effective Date (as hereinafter defined) of this Amendment, each of the New Banks shall become a party to the Credit Agreement as a Bank and shall have the rights and obligations of a Bank thereunder, the



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respective Commitment of Chase and each of the New Banks under the Credit Agreement shall be in the amount set forth opposite its name on Annex A hereto, as
the same may be reduced from time to time pursuant to Section 2.10 of the Credit Agreement;



NOW, THEREFORE,the parties hereto hereby agree as follows:



1. As used herein, all terms that are defined in the Credit Agreement shall have the same meanings herein.



2. Annex A to the Credit Agreement is hereby replaced in its entirety by
Annex A hereto.



3. The signature pages of the Credit Agreement
are hereby amended to conform to the signature pages hereto.



4. By its execution and delivery hereof, Chase shall be deemed to have made each of the statements set forth in clauses (i) and (ii) of paragraph 2 of the Assignment and Acceptance as if such statements were fully set forth herein
at length.



5. By its execution and delivery hereof, each of
the New Banks shall be deemed to have made each of the statements set forth in clauses (i), (ii), (iii), (iv) and (v) of paragraph 3 of the Assignment and Acceptance as if such statements were fully set forth herein at length.



6. On the Effective Date, (i) each New Bank will pay to the Agent
(for the account of Chase) such amount as represents such New Banks pro rata portion of the aggregate principal amount of the Loans, if any, that are outstanding on the Effective Date and such New Banks pro rata portion of the aggregate
amount of the then unreimbursed drafts, if any, that were theretofore drawn under Letters of Credit, and (ii) the Agent shall pay to each of the New Banks such fees as have been previously agreed to between the Agent and such New Bank. Promptly
following the occurrence of the Effective Date, and in accordance with Section 10.03(e) of the Credit Agreement, the Agent shall record in the Register the names and addresses of each New Bank and the principal amount equal to such Banks
Commitment reflected on Annex A hereto.



7. By its execution
and delivery hereof, each of the New Banks (i) agrees that any interest, Commitment Fees and Letter of Credit Fees (pursuant to Sections 2.08, 2.20 and 2.21 of the Credit Agreement) that accrued prior to the Effective Date shall not be payable
to such New Bank and authorizes and directs the Agent to deduct such amounts from any interest, Commitment Fees or Letter of Credit Fees paid after the date hereof and to pay such amounts to Chase (it being understood that interest, Commitment Fees
and Letter of Credit Fees respecting the Commitment of Chase and each New Bank which accrue on or after the Effective Date shall be payable to such Bank in accordance with its Commitment), (ii) acknowledges that if such New Bank is organized
under the laws of a jurisdiction outside of the United States, such New Bank has heretofore furnished to the Agent the forms prescribed by the Internal Revenue Service of the United States certifying as to such New Banks exemption from United



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States withholding taxes with respect to any payments to be made to such New Bank under the Credit Agreement (or such other documents as are necessary to
indicate that all such payments are subject to such tax at a rate reduced by an applicable tax treaty) and (iii) acknowledges that such New Bank has heretofore supplied to the Agent the information requested on the administrative questionnaire
which is attached to the Assignment and Acceptance as Exhibit A.



8. This Amendment shall not become effective (the Effective Date) until (i) the date on which this Amendment shall have been executed by the Borrower, the Guarantors, Chase, the New Banks and the Agent, and the Agent
shall have received evidence satisfactory to it of such execution and (ii) the payments provided for in clauses (i) and (ii) of paragraph 6 hereof shall have been made.



9. Except to the extent hereby amended, the Credit Agreement and each of the Loan Documents remain in full force and effect
and are hereby ratified and affirmed.



10. The Borrower agrees
that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the preparation, execution and delivery of this Amendment, including the reasonable fees and disbursements of special counsel to the Agent.



11. This Amendment shall be limited precisely as written and shall not be
deemed (a) to be a consent granted pursuant to, or a waiver or modification of, any other term or condition of the Credit Agreement or any of the instruments or agreements referred to therein or (b) to prejudice any right or rights which
the Agent or the Banks may now have or have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever the Credit Agreement is referred to in the Credit Agreement or any of
the instruments, agreements or other documents or papers executed or delivered in connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by this Amendment.



12. This Amendment may be executed in any number of counterparts and by the
different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



13. This Amendment shall be governed by, and construed in accordance with,
the laws of the State of New York.



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IN WITNESS WHEREOF,the parties hereto have caused this Agreement to be duly executed as of
the day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/s/    LEONARD A.
CAMPANAROName:

Leonard A. CampanaroTitle:

Senior Vice President &Chief Financial OfficerGUARANTORS:NITRAM LIQUIDATORS, INC.By:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

Assistant SecretaryDESSEAUX CORPORATION OF NORTH AMERICABy:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

President & Assistant SecretaryTHE CHASE MANHATTAN BANK,Individually and as AgentBy:

/s/    WILLIAM C. REPKOName:

William C. RepkoTitle:

Managing Director




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NEW BANKS:BANK OF AMERICA, N.A.By:

/s/    JEFFREY J.
PODWIKAName:

Jeffrey J. PodwikaTitle:

Vice PresidentGMAC COMMERCIAL CREDIT LLCBy:

/s/    FRANK IMPERATOName:

Frank ImperatoTitle:

Senior Vice PresidentBARCLAYS BANK PLCBy:

/s/    MARK MANSKIName:

Mark ManskiTitle:

Director




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ANNEX A

to

REVOLVING CREDIT AND GUARANTY AGREEMENT



Dated as of December 6, 2000 (as amended)



|                                                                                                                  |  |                  |             |                      |          |  
|----------------------------------------------------------------------------------------------------------------- |  | ---------------- | ----------- | -------------------- | -------- | -
|Bank                                                                                                              |  | CommitmentAmount |             | CommitmentPercentage |         
|The Chase Manhattan Bank 270 Park Avenue New York, New York 10017 Attn: Ms. Kelly Shield                          |  | $                | 62,500,000  |                      | 31.2500  | %
|                                                                                                                  |  |                 
|Bank of America, N.A. 231 South LaSalle Street 16thFloor Chicago, Illinois 60604 Attn: Mr. Jeffrey J. Podwika     |  | $                | 62,500,000  |                      | 31.2500  | %
|                                                                                                                  |  |                 
|GMAC Commercial Credit LLC 1290 Avenue of the Americas 3rdFloor New York, New York 10104 Attn: Mr. Frank Imperato |  | $                | 50,000,000  |                      | 25.0000  | %
|                                                                                                                  |  |                 
|Barclays Bank PLC 222 Broadway New York, New York 10038 Attn: Mr. Mark Manski                                     |  | $                | 25,000,000  |                      | 12.5000  | %
|                                                                                                                  |  |                 
|Total                                                                                                             |  | $                | 200,000,000 |                      | 100.0000 | %
|                                                                                                                  |  |                  |             |                      |          |  



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SCHEDULE I



EXHIBIT C

to Revolving Credit

and Guaranty Agreement



ASSIGNMENT AND ACCEPTANCE

Dated: ,



Reference is made to the Revolving Credit and Guaranty Agreement, dated as of
December 6, 2000 (as restated, amended, modified, supplemented and in effect from time to time, the Credit Agreement), among ARMSTRONG WORLD INDUSTRIES, INC., a Pennsylvania corporation, as Debtor and Debtor-in-Possession
(the Borrower), the Guarantors named therein, the Banks named therein and THE CHASE MANHATTAN BANK, as agent for the Banks (the Agent). Capitalized terms used herein and not otherwise defined shall have the
meanings assigned to such terms in the Credit Agreement. This Assignment and Acceptance between the Assignor (as set forth on Schedule I hereto and made a part hereof) and the Assignee (as set forth on Schedule I hereto and made a part hereof) is
dated as of the Effective Date (as set forth on Schedule I hereto and made a part hereof).



1. The Assignor hereby irrevocably sells and assigns to the Assignee without recourse to the Assignor, and the Assignee hereby irrevocably purchases and assumes from the Assignor without recourse to the Assignor, as
of the Effective Date, an undivided interest (the Assigned Interest) in and to all the Assignors rights and obligations under the Credit Agreement in a principal amount as set forth on Schedule I.



2. The Assignor (i) makes no representation or warranty and assumes no responsibility
with respect to any statements, warranties or representations made in or in connection with the Credit Agreement or any other of the Loan Documents or the execution, legality, validity, enforceability, genuineness, sufficiency or value of the Credit
Agreement, any other of the Loan Documents or any other instrument or document furnished pursuant thereto, other than that it is the legal and beneficial owner of the interest being assigned by it hereunder and that such interest is free and clear
of any adverse claim; (ii) makes no representation or warranty and assumes no responsibility with respect to the financial condition of the Borrower, or the performance or observance by the Borrower of any of its obligations under the Credit
Agreement, any of the other Loan Documents or any other instrument or document furnished pursuant thereto; and (iii) requests that the Agent evidence the Assigned Interest by recording the information contained on Schedule I in the Register
which reflects the assignment being made hereby (and after giving effect to any other assignments which have become effective on the Effective Date).



3. The Assignee (i) represents and warrants that it is legally authorized to enter into this Assignment and Acceptance and that it is an Eligible Assignee;
(ii) confirms that it has received



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a copy of the Credit Agreement, together with copies of the most recent financial statements delivered pursuant to Section 5.01 thereof, and such other
documents and information as it has deemed appropriate to make its own credit analysis; (iii) agrees that it will, independently and without reliance upon the Agent, the Assignor or any other Bank and based on such documents and information as
it shall deem appropriate at the time, continue to make its own credit decisions in taking or not taking action under the Credit Agreement; (iv) appoints and authorizes the Agent to take such action as agent on its behalf and to exercise such
powers under the Credit Agreement and the other Loan Documents as are delegated to the Agent by the terms thereof, together with such powers as are reasonably incidental thereto; (v) agrees that it will be bound by the provisions of the Credit
Agreement and will perform in accordance with its terms all the obligations which by the terms of the Credit Agreement are required to be performed by it as a Bank; (vi) if the Assignee is organized under the laws of a jurisdiction outside the
United States, attaches the forms prescribed by the Internal Revenue Service of the United States certifying as to the Assignees exemption from United States withholding taxes with respect to all payments to be made to the Assignee under the
Credit Agreement; and (vii) has supplied the information requested on the administrative questionnaire heretofore supplied by the Agent.



4. Following the execution of this Assignment and Acceptance, it will be delivered to the Agent, together with a processing and recordation fee of $3,500, for acceptance
by it and recording by the Agent pursuant to Section 10.03 of the Credit Agreement, effective as of the Effective Date (which Effective Date shall, unless otherwise agreed to by the Agent, be within ten Business Days after the execution of this
Assignment and Acceptance).



5. Upon such acceptance and recording, from and
after the Effective Date, the Agent shall make all payments in respect of the Assigned Interest (including payments of principal, interest, fees and other amounts) to the Assignee, whether such amounts have accrued prior to the Effective Date or
accrue subsequent to the Effective Date. The Assignor and Assignee shall make all appropriate adjustments in payments for periods prior to the Effective Date by the Agent or with respect to the making of this assignment directly between themselves.



6. From and after the Effective Date, (i) the Assignee shall be a party
to the Credit Agreement and, to the extent provided in this Assignment and Acceptance, have the rights and obligations of a Bank thereunder, and (ii) the Assignor shall, to the extent provided in this Assignment and Acceptance, relinquish its
rights and be released from its obligations under the Credit Agreement provided that Assignor hereby represents and warrants that the restrictions set forth in Section 10.03 of the Credit Agreement pertaining to the minimum amount of assignments
have been satisfied.



7. This Assignment and Acceptance shall be governed by,
and construed in accordance with, the laws of the State of New York.



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IN WITNESS WHEREOF, the parties hereto have caused this Assignment and Acceptance to be
executed by their respective duly authorized officers on Schedule I hereto.



Schedule I to Assignment and Acceptance Respecting the Revolving Credit and Guaranty Agreement, dated as of December 6, 2000, among Armstrong World Industries, Inc., the Guarantors named therein, the Banks named
therein, and The Chase Manhattan Bank, as Agent



Legal Name of Assignor:



Legal Name of Assignee:



Effective Date of Assignment:



|                          |  |                                                                                                            
|------------------------- |  | -----------------------------------------------------------------------------------------------------------
|Principal Amount Assigned |  | Percentage Assigned (to at least 8 decimals)shown as a percentage of aggregateprincipal amount of all Banks
|                          | 
|$                         |  | %                                                                                                          



|                           |  |  |  |             |  |        |  | 
|-------------------------- |  |  |  | ----------- |  | ------ |  | 
|CONSENTED TO AND ACCEPTED: |  |  |  |            
|                           |  | 
|THE CHASE MANHATTAN BANK,  |  |  |  | ,          
|as Agent                   |  |  |  | as Assignor
|                           |  |  |  |            
|By                         |  |  |  |             |  | By     |  | 
|Name:                      |  |  |  |             |  | Name:  |  | 
|Title:                     |  |  |  |             |  | Title: |  | 
|                           |  | 
|,                          |  |  |  | ,          
|as Fronting Bank           |  |  |  | as Assignee
|                           |  |  |  |            
|By                         |  |  |  |             |  | By     |  | 
|Name:                      |  |  |  |             |  | Name:  |  | 
|Title:                     |  |  |  |             |  | Title: |  | 



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FOURTH AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



FOURTH
AMENDMENT, dated as of September 30, 2002 (the Amendment), to the REVOLVING CREDIT AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES, INC., a
Pennsylvania corporation (the Borrower), a debtor and debtor-in-possession under Chapter 11 of the Bankruptcy Code, the Guarantors named therein (the Guarantors), JPMORGAN CHASE BANK, a New York
banking corporation (JPMorgan Chase) successor to The Chase Manhattan Bank, each of the other financial institutions party thereto (together with JPMorgan Chase, the Banks) and JPMORGAN CHASE BANK,
as Agent for the Banks (in such capacity, the Agent) successor to The Chase Manhattan Bank:



W I T N E S S E T H:



WHEREAS,the Borrower, the Guarantors, the Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as
of December 6, 2000, as amended by that certain First Amendment to Revolving Credit and Guaranty Agreement dated as of February 2, 2001, that certain Amendment Letter dated as of February 28, 2001, that certain Second Amendment to
Revolving Credit and Guaranty Agreement dated as of May 29, 2001 and that certain Third Amendment to Revolving Credit and Guaranty Agreement dated as of June 4, 2001 (as the same may be further amended, modified or supplemented from time
to time, the Credit Agreement); and



WHEREAS,the Borrowers and the Guarantors have requested that from and after the Effective Date (as hereinafter defined) of this Amendment, the Credit Agreement be amended subject to and upon the terms and conditions set forth
herein;



NOW, THEREFORE,the parties hereto
hereby agree as follows:



1. As used herein, all terms that are
defined in the Credit Agreement shall have the same meanings herein.



2. Section 1.01 of the Credit Agreement is hereby amended by amending the definition of Maturity Date in its entirety to read as follows:



Maturity Date shall mean December 8, 2003.



3. The Total Commitment is hereby reduced from $200,000,000 to $75,000,000
with the Total Commitment to be allocated among the Banks as set forth on Annex A hereto. The participations in Letter of Credit Outstandings of the Banks having Commitments from and after the Effective Date will be deemed to have been adjusted
accordingly on the Effective Date without further action by any party hereto.



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4. Annex A to the Credit Agreement is hereby replaced in its entirety by Annex A hereto.



5. Notwithstanding anything contained in the Credit Agreement to the contrary
(including, without limitation Section 2.01 thereof), all obligations of the Banks to make Loans to the Borrower shall terminate upon the Effective Date and be of no further force and the Commitments shall be available only for Letters of
Credit. The Fronting Bank shall continue to issue Letters of Credit pursuant to the terms of the Credit Agreement, as amended hereby, it being understood that the Borrower shall be required to reimburse the Fronting Bank for each draft drawn under a
Letter of Credit on the first Business Day following the date of the draw, and to pay interest on such draw as set forth in the Credit Agreement.



6. Upon the Effective Date, GMAC Commercial Credit LLC will no longer be a Bank and is released from all obligations under the Credit Agreement including,
without limitation, obligations to fund Loans under Section 2.01(a) thereof, obligations to fund participations in Letters of Credit under Section 2.01(f) thereof, and reimbursement and indemnification obligations under Section 8.06
thereof.



7. Section 5.01 (a) to the Credit Agreement
is amended in its entirety to read as follows:



(a)
within 90 days after the end of each fiscal year, the Borrowers stand alone and the Borrowers consolidated balance sheet and related statement of income and cash flows, showing the financial condition of the Borrower alone and the
Borrower and its consolidated Subsidiaries on a consolidated basis, respectively, as of the close of such fiscal year and the results of their respective operations during such year, the consolidated statement of the Borrower to be audited for the
Borrower by KPMG LLP or other independent public accountants of recognized national standing acceptable to the Required Banks and accompanied by an opinion of such accountants (which shall not be qualified in any material respect other than with
respect to the Cases or a going concern qualification) and each of the stand alone and consolidated statements to be certified by a Financial Officer of the Borrower to the effect that such financial statements fairly present the financial condition
and results of operations of the Borrower alone and the Borrower and its consolidated Subsidiaries on a consolidated basis, respectively, in accordance with GAAP;



8. Notwithstanding anything to the contrary contained in the Credit Agreement, so long as the Borrower and Guarantors hold
cash and cash equivalents in an aggregate amount equal to at least 133% of the Total Commitment as modified herein, the Borrower shall not be required to comply with the requirements of Sections 5.01(d), 5.01(e), 5.01(h), 5.01(q) and 5.07 (provided
that the Borrower shall give prompt written notice to the Agent if the aggregate amount of such cash and cash equivalents is less than such amount at any time), such that so long as such cash and cash equivalents exceed such amount, the Borrower
shall not be required to deliver:



(i) the unaudited quarterly
cash flow reports of the Borrower and the Guarantors on a consolidated basis and as of the close of such fiscal quarter and the results of their operations during such fiscal period and the then elapsed portion of the fiscal year pursuant to
Section 5.01(d);



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(ii) weekly reports reflecting the Borrowers collected cash balances and cash equivalents as of
Friday of the immediately preceding week pursuant to Section 5.01(e);



(iii) annual updates for the period through the Maturity Date of the forecast delivered to the Agent and the Banks as a condition to the initial extensions of credit under the Credit Agreement pursuant to
Section 5.01(h);



(iv) notices of the sale or other
disposition (or casualty loss) of any of the assets included in the PP & E Component with an aggregate book value of in excess of $5,000,000 pursuant to Section 5.01(q); or



(v) Borrowing Base Certificates and other supporting documentation and additional reports with respect to the Borrowing Base
pursuant to Section 5.07.



9. This Amendment shall not
become effective (the Effective Date) until (i) the date on which this Amendment shall have been executed by the Borrower, the Guarantors, the Banks and the Agent, and the Agent shall have received evidence satisfactory to it
of such execution, (ii) the Bankruptcy Court shall have entered an order in form and substance satisfactory to the Agent authorizing the terms of this Amendment and the payment by the Borrower to the Agent, for its own account of an arrangement
fee in the amount heretofore agreed upon by the Borrower and the Agent, and for the respective account of each Bank that will have a Commitment from and after the Effective Date, an amendment fee in an amount equal to 1/10 of 1% of the Commitment of
such Bank as reduced, and (iii) such arrangement fee set forth in clause (ii) above shall have been paid in cash to the Agent for its own account, and such amendment fee set forth in clause (ii) above shall have been paid in cash to
the Agent for its own account and the accounts of the Banks referred to above.



10. If there are any Loans outstanding on the Effective Date, the Borrower will at that time (notwithstanding anything to the contrary contained in Sections 2.13(a) or 2.17 of the Credit Agreement) prepay all of such
Loans in full, together with any accrued or unpaid interest hereon.



11. Except to the extent hereby amended, the Credit Agreement and each of the Loan Documents remain in full force and effect and are hereby ratified and affirmed.



12. The Borrower agrees that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the
preparation, execution and delivery of this Amendment, including the reasonable fees and disbursements of special counsel to the Agent.



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13. This Amendment shall be limited precisely as written and shall not be deemed (a) to be a consent
granted pursuant to, or a waiver or modification of, any other term or condition of the Credit Agreement or any of the instruments or agreements referred to therein or (b) to prejudice any right or rights which the Agent or the Banks may now
have or have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever the Credit Agreement is referred to in the Credit Agreement or any of the instruments, agreements or
other documents or papers executed or delivered in connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by this Amendment.



14. This Amendment may be executed in any number of counterparts and by the different parties hereto in separate
counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



15. This Amendment shall be governed by, and construed in accordance with, the laws of the State of New York.



IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed as of the day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/s/    LEONARD A.
CAMPANAROName:

Leonard A. CampanaroTitle:

Senior Vice President &Chief Financial OfficerBy:

/s/    BARRY M. SULLIVANName:

Barry M. SullivanTitle:

Vice President & Treasurer




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GUARANTORS:NITRAM LIQUIDATORS, INC.By:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

Assistant SecretaryDESSEAUX CORPORATION OF NORTH AMERICABy:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

President & Assistant SecretaryJPMORGAN CHASE BANK,Individually and as AgentBy:

/s/    STEPHANIE PARKERName:

Stephanie ParkerTitle:

Vice PresidentBANK OF AMERICA, N.A.By:

/s/    JEFFREY J.
PODWIKAName:

Jeffrey J. PodwikaTitle:

Vice PresidentGMAC COMMERCIAL CREDIT LLCBy:

/s/    DAVID M. DUFFYName:

David M. DuffyTitle:

Senior Vice PresidentBARCLAYS BANK PLCBy:

/s/    MARK MANSKIName:

Mark ManskiTitle:

Director




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Annex A



ANNEX A

to

REVOLVING CREDIT AND GUARANTY AGREEMENT



Dated as of January 31, 2003 (as amended)



|                                                                                                                             |  |                                    |               |                                        |        |   |                                    |   |                                        |  |        |  
|---------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | ------------- | -------------------------------------- | ------ | - | ---------------------------------- | - | -------------------------------------- |  | ------ | -
|Bank                                                                                                                         |  | Tranche ARevolvingCommitmentAmount |               | Tranche ARevolvingCommitmentPercentage |        |   | Tranche BTerm LoanCommitmentAmount |   | Tranche BTerm LoanCommitmentPercentage | 
|JPMorgan Chase Bank 270 Park Avenue New York, NY 10017 Attn: Patrick Daniello                                                |  | $                                  | 9,666,666.66  |                                        | 38.67  | % |                                    | $ | 21,333,333.34                          |  | 42.67  | %
|                                                                                                                             |  |                                    |               |                                       
|Bank One, NA 120 S. Lasalle Chicago, IL 60603 Attn: Joseph Heskett Steven C. Gross                                           |  | $                                  | 6,666,666.67  |                                        | 26.67  | % |                                    | $ | 13,333,333.33                          |  | 26.67  | %
|                                                                                                                             |  |                                    |               |                                       
|General Electric Capital Corp. 500 West Monroe Street Chicago, IL 60661 Attn: Jeffrey Kurtzweil                              |  | $                                  | 6,666,666.67  |                                        | 26.67  | % |                                    | $ | 13,333,333.33                          |  | 26.67  | %
|                                                                                                                             |  |                                    |               |                                       
|PB Capital Corporation 590 Madison Avenue New York, New York 10022 Attn: Sharon Fong                                         |  | $                                  | 1,333,333.33  |                                        | 5.33   | % |                                    | $ | 666,666.67                             |  | 1.33   | %
|                                                                                                                             |  |                                    |               |                                       
|The Travelers Insurance Company 242 Trumbull Street P.O. Box 150449, 7th Floor Hartford, CT 06115-0449 Attn: John J. Console |  | $                                  | 666,666.67    |                                        | 2.67   | % |                                    | $ | 1,333,333.33                           |  | 2.67   | %
|                                                                                                                             |  |                                    |               |                                       
|Totals:                                                                                                                      |  | $                                  | 25,000,000.00 |                                        | 100.00 | % |                                    | $ | 50,000,000.00                          |  | 100.00 | %



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FIFTH AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



FIFTH AMENDMENT,
dated as of October 31, 2003 (the Amendment), to the REVOLVING CREDIT AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES,INC.,a Pennsylvania
corporation (the Borrower), a debtor and debtor-in-possession under Chapter 11 of the Bankruptcy Code, the Guarantors named therein (the Guarantors), JPMORGAN CHASE BANK,a New York banking
corporation (JPMorgan Chase) successor to The Chase Manhattan Bank, each of the other financial institutions party thereto (together with JPMorgan Chase, the Banks) and JPMORGAN CHASE BANK, as
Agent for the Banks (in such capacity, the Agent) successor to The Chase Manhattan Bank:



W I T N E S S E T H:



WHEREAS, the Borrower, the Guarantors, the Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as of December 6, 2000, as amended by that certain First
Amendment to Revolving Credit and Guaranty Agreement dated as of February 2, 2001, that certain Amendment Letter dated as of February 28, 2001, that certain Second Amendment to Revolving Credit and Guaranty Agreement dated as of
May 29, 2001, that certain Third Amendment to Revolving Credit and Guaranty Agreement dated as of June 4, 2001 and that certain Fourth Amendment to Revolving Credit and Guaranty Agreement dated September 30, 2002 (as the same may be
further amended, modified or supplemented from time to time, the Credit Agreement); and



WHEREAS, the Borrowers and the Guarantors have requested that from and after the Effective Date (as hereinafter defined) of this Amendment,
the Credit Agreement be amended subject to and upon the terms and conditions set forth herein;



NOW, THEREFORE,the parties hereto hereby agree as follows:



1. As used herein, all terms that are defined in the Credit Agreement shall have the same meanings herein.



2. Section 1.01 of the Credit Agreement is hereby amended by amending
the definition of Maturity Date in its entirety to read as follows:



Maturity Date shall mean December 8, 2004.



---

3. This Amendment shall not become effective (the Effective Date) until (i) the
date on which this Amendment shall have been executed by the Borrower, the Guarantors, the Banks and the Agent, and the Agent shall have received evidence satisfactory to it of such execution, and (ii) the Bankruptcy Court shall have entered an
order in form and substance satisfactory to the Agent authorizing the terms of this Amendment and the conditional payment by the Borrower to the Agent, for its own account of an arrangement fee in the amount and upon the conditions heretofore agreed
upon by the Borrower and the Agent, and for the respective account of each Bank, a conditional amendment fee in the amount and upon the conditions heretofore agreed upon by the Borrower and the Banks.



4. Except to the extent hereby amended, the Credit Agreement and each of the
Loan Documents remain in full force and effect and are hereby ratified and affirmed.



5. The Borrower agrees that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the preparation, execution and delivery of this Amendment, including the reasonable fees and
disbursements of special counsel to the Agent.



6. This
Amendment shall be limited precisely as written and shall not be deemed (a) to be a consent granted pursuant to, or a waiver or modification of, any other term or condition of the Credit Agreement or any of the instruments or agreements
referred to therein or (b) to prejudice any right or rights which the Agent or the Banks may now have or have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever
the Credit Agreement is referred to in the Credit Agreement or any of the instruments, agreements or other documents or papers executed or delivered in connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by
this Amendment.



7. This Amendment may be executed in any
number of counterparts and by the different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



8. This Amendment shall be governed by, and construed in
accordance with, the laws of the State of New York.



---

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of
the day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/s/    LEONARD A.
CAMPANAROName:

Leonard A. CampanaroTitle:

Senior Vice President &Chief Financial OfficerBy:

/s/    BARRY M. SULLIVANName:

Barry M. SullivanTitle:

Vice President & TreasurerGUARANTORS:NITRAM LIQUIDATORS, INC.By:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

Assistant SecretaryDESSEAUX CORPORATION OF NORTH AMERICABy:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

President & Assistant SecretaryJPMORGAN CHASE BANK,Individually and as AgentBy:

/s/    STEPHANIE PARKERName:

Stephanie ParkerTitle:

Vice President




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BANK OF AMERICA, N.A.By:

/s/    R. BARTKOWICZName:

R. BartkowiczTitle:

Vice PresidentBARCLAYS BANK PLCBy:

/s/    NICHOLAS BELLName:

Nicholas BellTitle:

Director




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SIXTH AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



SIXTH AMENDMENT,
dated as of October 15, 2004 (the Amendment), to the REVOLVING CREDIT AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES, INC.,a Pennsylvania corporation
(the Borrower), a debtor and debtor-in-possession under Chapter 11 of the Bankruptcy Code, the Guarantors named therein (the Guarantors), JPMORGAN CHASE BANK,a New York banking corporation
(JPMorgan Chase), as successor to The Chase Manhattan Bank, each of the other financial institutions party thereto (together with JPMorgan Chase, the Banks) and JPMORGAN CHASE BANK, as Agent for
the Banks (in such capacity, the Agent), as successor to The Chase Manhattan Bank:



W I T N E S S E T H:



WHEREAS, the Borrower, the Guarantors, the Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as of December 6, 2000, as amended by that certain First
Amendment to Revolving Credit and Guaranty Agreement dated as of February 2, 2001, that certain Amendment Letter dated as of February 28, 2001, that certain Second Amendment to Revolving Credit and Guaranty Agreement dated as of
May 29, 2001, that certain Third Amendment to Revolving Credit and Guaranty Agreement dated as of June 4, 2001, that certain Fourth Amendment to Revolving Credit and Guaranty Agreement dated as of September 30, 2002 and that certain
Fifth Amendment to Revolving Credit and Guaranty Agreement dated as of October 31, 2003 (as the same may be further amended, modified or supplemented from time to time, the Credit Agreement); and



WHEREAS,the Borrowers and the Guarantors have requested that
from and after the Effective Date (as hereinafter defined) of this Amendment, the Credit Agreement be amended subject to and upon the terms and conditions set forth herein;



NOW, THEREFORE, the parties hereto hereby agree as follows:



1. As used herein, all terms that are defined in the Credit Agreement shall
have the same meanings herein.



2. The Introductory Statement
of the Credit Agreement is hereby amended by deleting the word Chase appearing in the fourth paragraph thereof and inserting in lieu thereof the words any Bank hereunder.



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3. Section 1.01 of the Credit Agreement is hereby amended by amending the definition of
Maturity Date in its entirety to read as follows:



Maturity Date shall mean December 8, 2005.



4. Section 2.23 of the Credit Agreement is hereby amended by deleting the word Chase appearing in the fourth line thereof and inserting in lieu thereof the words any Bank hereunder..



5. This Amendment shall not become effective (the
Effective Date) until (i) the date on which this Amendment shall have been executed by the Borrower, the Guarantors, the Banks and the Agent, and the Agent shall have received evidence satisfactory to it of such execution,
and (ii) the Bankruptcy Court shall have entered an order in form and substance satisfactory to the Agent authorizing the terms of this Amendment and the conditional payment by the Borrower to the Agent (x) for its own account, of an
arrangement fee in the amount and upon the conditions heretofore agreed upon by the Borrower and the Agent, and (y) for the respective account of each Bank, of an amendment fee in the amount and upon the conditions heretofore agreed upon by the
Borrower and the Banks.



6. Except to the extent hereby
amended, the Credit Agreement and each of the Loan Documents remain in full force and effect and are hereby ratified and affirmed.



7. The Borrower agrees that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the preparation, execution and
delivery of this Amendment, including the reasonable fees and disbursements of special counsel to the Agent.



8. This Amendment shall be limited precisely as written and shall not be deemed (a) to be a consent granted pursuant to, or a waiver or modification
of, any other term or condition of the Credit Agreement or any of the instruments or agreements referred to therein or (b) to prejudice any right or rights which the Agent or the Banks may now have or have in the future under or in connection
with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever the Credit Agreement is referred to in the Credit Agreement or any of the instruments, agreements or other documents or papers executed or delivered in
connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by this Amendment.



9. This Amendment may be executed in any number of counterparts and by the different parties hereto in separate counterparts, each of which when so
executed



---

and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



10. This Amendment shall be governed by, and construed in accordance with,
the laws of the State of New York.



IN WITNESS WHEREOF,
the parties hereto have caused this Agreement to be duly executed as of the day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/s/    LEONARD A.
CAMPANAROName:

Leonard A. CampanaroTitle:

Senior Vice President &Chief Financial OfficerBy:

/s/    BARRY M. SULLIVANName:

Barry M. SullivanTitle:

Vice President & TreasurerGUARANTORS:NITRAM LIQUIDATORS, INC.By:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

Assistant SecretaryDESSEAUX CORPORATION OF NORTH AMERICABy:

/s/    WALTER T. GANGLName:

Walter T. GanglTitle:

President & Assistant Secretary




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JPMORGAN CHASE BANK,Individually and as AgentBy:

/s/    JOHN P.
MCDONAGHName:

John P. McDonaghTitle:

Managing DirectorBANK OF AMERICA, N.A.By:

/s/    ROBERT BARTKOWICZName:

Robert BartkowiczTitle:

Vice PresidentBARCLAYS BANK PLCBy:

/s/    DANNY COPERName:

Danny CoperTitle:

Director




---

SEVENTH AMENDMENT

TO REVOLVING CREDIT AND

GUARANTY AGREEMENT



SEVENTH AMENDMENT, dated as of October 27, 2005 (the
Amendment), to the REVOLVING CREDIT AND GUARANTY AGREEMENT, dated as of December 6, 2000, among ARMSTRONG WORLD INDUSTRIES, INC., a Pennsylvania corporation (the Borrower), a debtor and
debtor-in-possession under Chapter 11 of the Bankruptcy Code, the Guarantors named therein (the Guarantors), JPMORGAN CHASE BANK, N.A., a national banking corporation (JPMorgan Chase), formerly
known as JPMorgan Chase Bank, each of the other financial institutions party thereto (together with JPMorgan Chase, the Banks) and JPMORGAN CHASE BANK, N.A., as Agent for the Banks (in such capacity, the
Agent), formerly known as JPMorgan Chase Bank:



W I T N E S S E T H:



WHEREAS, the
Borrower, the Guarantors, the Banks and the Agent are parties to that certain Revolving Credit and Guaranty Agreement, dated as of December 6, 2000, as amended by that certain First Amendment to Revolving Credit and Guaranty Agreement dated as
of February 2, 2001, that certain Amendment Letter dated as of February 28, 2001, that certain Second Amendment to Revolving Credit and Guaranty Agreement dated as of May 29, 2001, that certain Third Amendment to Revolving Credit and
Guaranty Agreement dated as of June 4, 2001, that certain Fourth Amendment to Revolving Credit and Guaranty Agreement dated as of September 30, 2002, that certain Fifth Amendment to Revolving Credit and Guaranty Agreement dated as of
October 31, 2003, and that certain Sixth Amendment to Revolving Credit and Guaranty Agreement dated as of October 14, 2004 (as the same may be further amended, modified or supplemented from time to time, the Credit
Agreement); and



WHEREAS, the Borrowers and
the Guarantors have requested that from and after the Effective Date (as hereinafter defined) of this Amendment, the Credit Agreement be amended subject to and upon the terms and conditions set forth herein;



NOW, THEREFORE, the parties hereto hereby agree as follows:



1. As used herein, all terms that are defined in the Credit
Agreement shall have the same meanings herein.



2. The Preamble
of the Credit Agreement is hereby amended by deleting each reference to THE CHASE MANHATTAN BANK appearing therein and



---

replacing such references with the following: JPMORGAN CHASE BANK, N.A. (formerly known as JPMorgan Chase Bank).



3. Section 1.01 of the Credit Agreement is hereby amended by amending
the definition of Maturity Date in its entirety to read as follows:



Maturity Date shall mean December 8, 2006.



4. This Amendment shall not become effective (the Effective Date) until (i) the date on which this Amendment shall have been
executed by the Borrower, the Guarantors, the Banks and the Agent, and the Agent shall have received evidence satisfactory to it of such execution, (ii) the Bankruptcy Court shall have entered an order in form and substance satisfactory to the
Agent authorizing the terms of this Amendment and the payment by the Borrower to the Agent (x) for its own account, of an arrangement fee in the amount heretofore agreed upon by the Borrower and the Agent, and (y) for the respective
account of each Bank, of an amendment fee in the amount heretofore agreed upon by the Borrower and the Banks and (iii) the fees referred to in the preceding clause (ii) shall have been paid by the Borrower to the Agent.



5. Except to the extent hereby amended, the Credit Agreement and each of the
Loan Documents remain in full force and effect and are hereby ratified and affirmed.



6. The Borrower agrees that its obligations set forth in Section 10.05 of the Credit Agreement shall extend to the preparation, execution and delivery of this Amendment, including the reasonable fees and
disbursements of special counsel to the Agent.



7. This
Amendment shall be limited precisely as written and shall not be deemed (a) to be a consent granted pursuant to, or a waiver or modification of, any other term or condition of the Credit Agreement or any of the instruments or agreements
referred to therein or (b) to prejudice any right or rights which the Agent or the Banks may now have or have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein. Whenever
the Credit Agreement is referred to in the Credit Agreement or any of the instruments, agreements or other documents or papers executed or delivered in connection therewith, such reference shall be deemed to mean the Credit Agreement as modified by
this Amendment.



8. This Amendment may be executed in any
number of counterparts and by the different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument.



---

9. This Amendment shall be governed by, and construed in accordance with, the laws of the State of New
York.



---

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the
day and the year first written.



BORROWER:ARMSTRONG WORLD INDUSTRIES, INC.By:

/S/    F. NICHOLAS
GRASBERGERName:

F. Nicholas GrasbergerTitle:

Senior Vice President and Chief Financial Officer




By:

/S/    BARRY M.
SULLIVANName:

Barry M. SullivanTitle:

Vice President and Treasurer






GUARANTORS:NITRAM LIQUIDATORS, INC.By:

/S/    WALTER T.
GANGLName:

Walter T. GanglTitle:

Assistant Secretary




DESSEAUX CORPORATION OF NORTH AMERICABy:

/S/    WALTER T.
GANGLName:

Walter T. GanglTitle:

President and Assistant Secretary




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LENDERS:JPMORGAN CHASE BANK, N.A.(formerly known as JPMorgan Chase Bank) Individually and as AgentBy:

/s/    STEPHANIE
PARKERName:

Stephanie ParkerTitle:

Vice President




BANK OF AMERICA, N.A.By:

/s/    ROBERT
BARTKOWITZName:

Robert BartkowitzTitle:

Senior Vice President




BARCLAYS BANK PLCBy:

/s/    ARTHUR J.
OLSENName:

Arthur J. OlsenTitle:

Director