Document:

<PAGE>   1

                                                                   EXHIBIT 10(B)

                        FIFTH AMENDMENT TO LOAN AGREEMENT
                            AND OTHER LOAN DOCUMENTS

         THIS FIFTH AMENDMENT TO LOAN AGREEMENT AND OTHER LOAN DOCUMENTS (this
"Amendment") dated as of June 15, 2001 (the "Effective Date"), is entered into
by MARTIN INDUSTRIES, INC., a Delaware corporation which is the successor by
merger to Martin Industries, Inc., an Alabama corporation (the "Borrower"), and
AMSOUTH BANK, an Alabama banking corporation formerly doing business as AmSouth
Bank, N.A., a national banking association, and AmSouth Bank of Alabama, an
Alabama banking corporation (the "Lender").

                                    RECITALS:

         A.       The Borrower and the Lender are parties to a certain Loan
Agreement dated as of January 7, 1993, as amended by letter of April 5, 1994,
and as assumed and modified by an Assumption and Modification Agreement dated
February 17, 1995, and as further modified and amended by a First Amendment to
Loan Agreement and other Loan Documents dated as of March 15, 1995, and as
further modified and amended by a Second Amendment to Loan Agreement and Other
Documents dated as of March 28, 1996, and as further modified and amended by a
Third Amendment to Loan Agreement and Other Loan Documents dated as of August
28, 1997, and as further modified and amended by a Fourth Amendment to Loan
Agreement and Other Documents dated as of January 1, 2000, and as further
amended by letters of December 29, 2000, January 31, 2001, March 15, 2001, and
May 15, 2001 (the "Loan Agreement").

         B.       The Borrower and the Lender wish further to amend the Loan
Agreement to make the changes set forth in this Amendment.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the foregoing recitals and in
further consideration of the mutual agreements set forth herein, effective as of
the Effective Date, the Borrower and the Lender hereby agree as follows:

         1.       DEFINITIONS. Capitalized terms used in this Amendment and not
otherwise defined herein have the meanings defined for them in the Loan
Agreement.

         2.       REPRESENTATIONS AND WARRANTIES OF BORROWER. The Borrower
represents and warrants to the Lender that as of the Effective Date, and giving
effect to this Amendment, no Event of Default (nor any event that upon notice or
lapse of time or both would constitute an Event of Default) exists under the
Loan Agreement or any of the other Loan Documents.

         3.       AMENDMENTS TO LOAN AGREEMENT AS OF EFFECTIVE DATE. Effective
as of the Effective Date, the Loan Agreement is amended as follows:

                                        1
<PAGE>   2

                  (A)      The following new definitions are added in
         alphabetical order in Section 1.02:

                           ELIGIBLE ACCOUNT shall mean and include only Accounts
                           that are not more than 30 days past due, in each case
                           according to the terms shown on the invoice (or the
                           date of the invoice where terms are not specifically
                           stated) and represent sums payable for services
                           rendered or goods sold or leased by the Borrower in
                           the ordinary course of business, as the Lender shall
                           deem eligible based on such credit and collateral
                           considerations as the Lender shall deem appropriate.
                           Without limiting the generality of the foregoing,
                           there shall be excluded any Account from Eligible
                           Accounts if and to the extent:

                           (i)      the subject goods have been shipped or
                           delivered to a Purchaser on a bill-and-hold,
                           guaranteed sale, consignment, approval or sale-or-
                           return basis or subject to any other repurchase or
                           return agreement; or

                           (ii)     any material part of the subject goods has
                           been returned, rejected, lost or damaged; or

                           (iii)    the Purchaser is located outside the United
                           States; or

                           (iv)     the Purchaser is also the Borrower's
                           Affiliate, or

                           (v)      the Purchaser is also the Borrower's
                           supplier or creditor, to the extent of amounts due
                           from the Borrower to such supplier or creditor; or

                           (vi)     the Account is not evidenced by an invoice
                           in form acceptable to the Lender; or

                           (vii)    more than 50% in amount of the other
                           Accounts of the Purchaser are more than 60 days past
                           due; or

                           (viii)   the Account arises out of transactions with
                           an employee, officer, agent, director, stockholder or
                           Affiliate of the Borrower; or

                           (ix)     the general creditworthiness and financial
                           condition of the Purchaser are not acceptable to the
                           Lender; or

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<PAGE>   3

                           (x)      the Lender believes, in its sole judgment,
                           that the collection of such Account is insecure or
                           that such Account may not be paid by reason of the
                           Purchaser's financial ability to repay; or

                           (xi)     the Borrower has disclosed to the Lender
                           that it does not make any of the representations or
                           warranties set forth in the Security Agreement with
                           respect to such Account or if any of such
                           representations or warranties are not true and
                           correct with respect to such Account; or

                           (xii)    the Account derives from, or is owed to, any
                           foreign Affiliate or subsidiary of the Borrower.

                           ELIGIBLE FINISHED GOODS INVENTORY shall mean and
                           include only Inventory of finished goods that is
                           located at one of the locations within the United
                           States specified in the Security Agreement as the
                           places at which Inventory is to be maintained, that
                           is saleable in the ordinary course of the Borrower's
                           business, and that meets all standards imposed by any
                           Governmental Authority having regulatory authority
                           over such goods or over their sale, and as the
                           Lender, in its sole judgment, shall deem eligible,
                           based on such credit and collateral considerations as
                           the Lender shall deem appropriate. Without limiting
                           the generality of the foregoing, the Lender may
                           exclude any Inventory from Eligible Finished Goods
                           Inventory if such Inventory is obsolete, or the
                           Borrower has disclosed to the Lender that it does not
                           make any of the representations or warranties set
                           forth in the Security Agreement with respect to such
                           Inventory or any of such representations and
                           warranties are not true and correct with respect to
                           such Inventory. The collateral value of Eligible
                           Finished Goods Inventory shall be computed at the
                           lower of cost or market and on a "first-in,
                           first-out" (FIFO) basis.

                           ELIGIBLE RAW MATERIAL INVENTORY shall mean and
                           include only Inventory of raw materials and purchased
                           parts that is located at one of the locations within
                           the United States specified in the Security Agreement
                           as the places at which Inventory is to be maintained
                           , that is saleable in the ordinary course of the
                           Borrower's business, and that meets all standards
                           imposed by any Governmental Authority having
                           regulatory authority over such goods or over their
                           sale, and as the Lender, in its sole judgment, shall
                           deem eligible, based on such credit and collateral
                           considerations as the Lender shall deem appropriate.
                           Without limiting the generality of the

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<PAGE>   4

                           foregoing, the Lender may exclude any Inventory from
                           Eligible Raw Material Inventory if such Inventory is
                           obsolete, or the Borrower has disclosed to the Lender
                           that it does not make any of the representations or
                           warranties set forth in the Security Agreement with
                           respect to such Inventory or any of such
                           representations and warranties are not true and
                           correct with respect to such Inventory. The
                           collateral value of Eligible Raw Material Inventory
                           shall be computed at the lower of cost or market and
                           on a "first-in, first-out" (FIFO) basis.

                           FIFTH AMENDMENT shall mean the Fifth Amendment to
                           Loan Agreement and Other Loan Documents between the
                           Borrower and the Lender as of June 15, 2001, which
                           document amends certain of the provisions of this
                           Agreement.

                  (B)      The following definitions in Section 1.02 are amended
         as follows:

                           BORROWING BASE shall mean the sum of (a) 80% of the
                           Net Outstanding Amount of Eligible Accounts plus (b)
                           35% of the collateral value of Eligible Finished
                           Goods Inventory, plus (c) 28% of the collateral value
                           of Eligible Raw Material Inventory.

                           MAXIMUM LINE OF CREDIT shall mean the lesser of (i)
                           the Borrowing Base then in effect and (ii)
                           $11,000,000, prior to October 31, 2001, or
                           $6,000,000, from and after October 31, 2001.

                  (C)      The definitions of the following terms in Section
         1.02 are deleted: "Eligible Inventory", "LIBOR-Based Rate" and "LIBOR
         Reserve Requirement".

                  (D)      The date "May 31, 1993" in the definition of "Line of
         Credit Termination Date" in Section 1.02, which was previously extended
         to June 15, 2001, is further amended to read "January 1, 2002."

                  (E)      Section 2.02 is amended to read as follows:

                           SECTION 2.02. TERM NOTE; PRINCIPAL REPAYMENT. The
                           Term Loan shall be evidenced by a promissory note,
                           payable to the order of the Lender, duly authorized
                           and executed on behalf of the Borrower, dated the
                           date hereof, in the principal amount of the Term Loan
                           and in the form of EXHIBIT A to the Fifth Amendment
                           (the "Term Note"). The principal amount of the Term
                           Note that remains outstanding as of June 15, 2001
                           shall be payable in 15 consecutive monthly
                           installments of $158,959.68 each, the first of which

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<PAGE>   5

                           shall be due and payable on July 15, 2001, and one of
                           which shall be payable on the 15th day of each
                           succeeding month, to and including September 15,
                           2002, on which date the entire remaining principal
                           balance of the Term Loan, together with accrued
                           interest thereon and reimbursable costs, shall be due
                           and payable.

                  (F)      Section 2.03(a) is amended to read as follows:

                           The Term Loan shall bear interest from and after the
                           Effective Date of the Fifth Amendment at the rate per
                           annum ("Prime-Based Rate") equal to one percentage
                           point (100 basis points) in excess of the Prime Rate
                           in effect from time to time (computed on an
                           Actual/360 Basis), payable monthly in arrears on the
                           15th day of each month for the period ending on the
                           last day of the immediately preceding calendar month,
                           commencing on June 15, 2001, and upon September 15,
                           2002.

                  (G)      Section 2.03(c) is amended to read as follows:

                           Upon the occurrence and during the continuance of any
                           Event of Default, the Term Note shall bear interest
                           (as liquidated damages and not as a penalty) at a
                           default interest rate equal to one percentage point
                           (100 basis points) in excess of the interest rate
                           that would otherwise be applicable.

                  (H)      The word "semiannual" that appears in the last
         sentence of Section 2.04 is deleted.

                  (I)      The figure "$15,000,000" that appears in the fourth
         line of Section 3.02, which was previously amended to "$10,000,000", is
         further amended to read "$11,000,000".

                  (J)      Section 3.03(a) is amended to read as follows:

                           (a)      Commencing on the Effective Date of the
                                    Fifth Amendment and continuing until payment
                                    in full, interest shall accrue on the Line
                                    of Credit Note (i) on the amount outstanding
                                    thereunder from time to time up to and
                                    including $10,000,000 at the rate per annum
                                    equal to one percentage point (100 basis
                                    points) in excess of the Prime Rate in
                                    effect from time to time, and (ii) on the
                                    amount outstanding thereunder from time to
                                    time in excess of $10,000,000 at the rate
                                    per annum equal to three percentage points
                                    (300 basis

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<PAGE>   6

                                    points) in excess of the Prime Rate in
                                    effect from time to time. All interest shall
                                    be computed on an Actual/360 Basis and shall
                                    be payable monthly in arrears on the 15th
                                    day of each month in each year for the
                                    period ending on the last day of the
                                    immediately preceding calendar month,
                                    commencing on June 15, 2001, and on the Line
                                    of Credit Termination Date. Any change in
                                    the interest rate on the Line of Credit Note
                                    because of a change in the Prime Rate shall
                                    take effect on the effective date of such
                                    change in the Prime Rate as announced by the
                                    Lender without notice to the Borrower and
                                    without any further action by the Lender.

                  (K)      Paragraphs (d), (e) and (f) of Section 3.03 are
                           deleted.

                  (L)      Section 3.06 is amended to read as follows:

                           SECTION 3.06. AVAILABILITY FEE. The Borrower shall
                           pay to the Lender an availability fee (the
                           "Availability Fee") that shall be computed at the
                           rate of fifty (50) basis points per annum times the
                           daily average difference between (i) the Maximum Line
                           of Credit amount and (ii) the sum of the aggregate
                           outstanding principal amount of the Advances made by
                           the Lender. The Availability Fee shall be payable in
                           arrears on the 15th day of each month in each year
                           for the period ending on the last day of the
                           immediately preceding calendar month and on the Line
                           of Credit Termination Date. The Availability Fee
                           shall be computed on an Actual/360 Basis. Subject to
                           the terms and conditions otherwise applicable to the
                           making of Advances hereunder, the Borrower may
                           request and receive Advances to pay the Availability
                           Fee under this Section 3.06.

                  (M)      The following new Section 3.07 is added immediately
         following Section 3.06:

                           SECTION 3.07. LOCKBOX ACCOUNT. The Borrower shall
                           establish and maintain with Lender a lockbox account
                           ("Lockbox"). The Borrower shall instruct all Eligible
                           Account account debtors to pay all proceeds of
                           Eligible Accounts to a post office box designated by
                           the Lender for deposit directly into the Lockbox.
                           Borrower shall not (without Lender's prior written
                           consent) collect any proceeds of sales or proceeds of
                           Eligible Accounts. If any payments of proceeds of
                           sales or any proceeds of Eligible Accounts are paid
                           directly to Borrower, then Borrower shall immediately

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<PAGE>   7

                           forward same to the Lockbox. All funds deposited into
                           the Lockbox shall be under the dominion and control
                           of Lender and shall be applied by the Lender on a
                           daily basis directly to the amount outstanding under
                           the Line of Credit. In the event that the Lender
                           refuses for any reason to deposit into the Lockbox
                           any remittance received as payment of an Eligible
                           Account, the Lender shall notify the Borrower within
                           three business days following the receipt of the
                           refused remittance.

                  (N)      The following new Section 3.08 is added immediately
         following Section 3.07:

                           SECTION 3.08. BORROWING BASE CERTIFICATION;
                           NEW INVOICES.

                           (a)      On the third business day of each week, the
                                    Borrower shall provide Lender with a
                                    borrowing base certificate in the form of
                                    EXHIBIT B to the Fifth Amendment (or such
                                    other form as Lender may require) as of the
                                    last business day of the immediately
                                    preceding week, signed by the Borrower's
                                    president, chief financial officer, director
                                    of finance or other officer acceptable to
                                    Lender, and certifying a Borrowing Base of
                                    not less than the then outstanding balance
                                    under the Line of Credit Note.

                           (b)      On each business day, the Borrower shall
                                    submit to Lender by facsimile transmission a
                                    report on all invoices sent to the
                                    Borrower's customers on the immediately
                                    preceding business day. Not less than
                                    weekly, the Borrower shall provide to Lender
                                    by U.S. Mail photocopies of the invoices
                                    sent to the Borrower's customers during the
                                    immediately preceding week.

                  (O)      Section 7.17, which requires a period of at least
         sixty (60) consecutive days during each calendar year during which the
         Borrower will cause the outstanding advances under the Line of Credit
         to be paid in full and shall maintain the principal balance of the Line
         of Credit at zero, is deleted.

                  (P)      The following new Section 7.18 is added immediately
         following Section 7.17:

                           SECTION 7.18. LOAN SERVICE FEE. The Borrower shall
                           pay to Lender a monthly loan service fee ("Loan
                           Service Fee") that shall be computed at the rate of
                           fifty (50) basis points per annum times the sum of
                           (i) the average daily

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<PAGE>   8

                           balance outstanding under the Term Loan and (ii) the
                           average daily balance outstanding under the Line of
                           Credit Note. The Loan Service Fee shall be payable in
                           arrears on the 15th day of each month in each year
                           for the one month period ending on the last day of
                           the immediately preceding calendar month. The Loan
                           Service Fee shall be computed on an Actual/360 Basis.
                           Subject to the terms and conditions otherwise
                           applicable to the making of Advances hereunder, the
                           Borrower may request and receive Advances to pay the
                           Loan Service Fee under this Section 7.18.

                  (Q)      The following new Section 7.19 is added immediately
         following Section 7.18:

                           SECTION 7.19. STRATEGIC ALTERNATIVES. The Borrower is
                           considering and pursuing various available strategic
                           alternatives, including one or more of the sale of
                           equity securities in the Borrower in a private
                           placement, the sale of some or all of the Borrower's
                           operating divisions, product lines or assets, or a
                           sale of the Borrower. The Borrower has engaged
                           McDonald Investments, an affiliate of Key Corp. and
                           full service investment banking firm headquartered in
                           Cleveland, Ohio ("McDonald"), to assist the Borrower
                           in exploring its strategic alternatives. The Borrower
                           will use its reasonable best efforts to pursue one or
                           more of the available strategic alternatives.
                           Although there can be no assurance that any specific
                           transaction or other strategic alternative will occur
                           or as to the form that any possible transaction or
                           other strategic alternative might take, the Borrower
                           covenants and agrees that by not later than August
                           15, 2001, the Borrower shall have either (a) made
                           material progress toward the implementation of a
                           strategic alternative, as reasonably determined by
                           the Lender, or (b) obtained a letter of intent from
                           an alternate lender to refinance and pay in full the
                           indebtedness of the Borrower then outstanding to the
                           Lender under the Loan Agreement. The Borrower does
                           not currently expect to publicly disclose
                           developments regarding its pursuit of strategic
                           alternatives unless and until it is in a position to
                           announce it has decided upon a definitive transaction
                           or strategic alternative. The Lender acknowledges
                           that it is aware, and that it will advise its
                           officers, employees, agents and representatives who
                           become aware of material, non-public information
                           concerning the Borrower, that the United States
                           securities laws prohibit them from purchasing or
                           selling securities of the Borrower while in
                           possession of such material, non-public information.

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<PAGE>   9

                  (R)      Section 8.09 is amended to read as follows:

                           SECTION 8.09 DEBT SERVICE COVERAGE RATIO. The
                           Borrower will not permit its ratio of Net Cash Flow
                           Before Interest Expense to Debt Service for the
                           fiscal quarter to be less than the applicable ratio
                           as of the following fiscal quarter end dates:

<TABLE>
<CAPTION>
                           Fiscal Quarter End
                                  Date                Ratio
                           ------------------      -----------

                           <S>                     <C>
                           June 30, 2001           (9.57) to 1
                           September 29, 2001        2.13 to 1
                           December 31, 2001         3.12 to 1
</TABLE>

                  (S)      Section 8.11 is amended to read as follows:

                           SECTION 8.11 WORKING CAPITAL RATIO. The Borrower will
                           not permit its ratio of Current Assets to Current
                           Liabilities as of the following fiscal period end
                           dates to be less than the applicable ratio:

<TABLE>
<CAPTION>
                           Fiscal Period End
                                 Date                   Ratio
                           ------------------         ---------

                           <S>                        <C>
                           June 30, 2001              0.89 to 1
                           September 29, 2001         0.94 to 1
                           December 31, 2001          1.02 to 1
</TABLE>

                  (T)      Section 8.12 is amended to read as follows:

                           SECTION 8.12 LEVERAGE RATIO. The Borrower will not
                           permit its ratio of Total Liabilities to Net Worth as
                           of the following fiscal period end dates to be
                           greater than the applicable ratio:

<TABLE>
<CAPTION>
                           Fiscal Period End
                                 Date                      Ratio
                           ------------------            ---------

                           <S>                           <C>
                           June 30, 2001                 2.02 to 1
                           September 29, 2001            1.82 to 1
                           December 31, 2001             1.42 to 1
</TABLE>

                  (U)      Section 8.13 is amended to read as follows:

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<PAGE>   10

                           SECTION 8.13 TANGIBLE NET WORTH. The Borrower will
                           not permit its Tangible Net Worth as of the following
                           fiscal period end dates to be less than the
                           applicable amount:

<TABLE>
<CAPTION>
                           Fiscal Period End
                                 Date                    Amount
                           ------------------         -----------

                           <S>                        <C>
                           June 30, 2001              $11,865,000
                           September 29, 2001         $12,597,000
                           December 31, 2001          $13,914,000
</TABLE>

                  (V)      The reference to Section 8.02 that appears in the
         final clause of Section 8.19 is amended to read "Section 7.01."

                  (W)      The following new Section 8.20 is added immediately
         following Section 8.19:

                           SECTION 8.20. EBITDA. (a) The Borrower will not
                           permit its monthly earnings before interest, taxes,
                           depreciation and amortization as of the following
                           dates to be less than the applicable amount:

<TABLE>
<CAPTION>
                              Month End
                                Date                    Amount
                           ------------------         ---------

                           <S>                        <C>
                           June 30, 2001              $(476,000)
                           August 4, 2001             $ 248,000
                           September 1, 2001          $ 429,000
                           September 29, 2001         $ 860,000
                           October 27, 2001           $ 639,000
                           November 24, 2001          $ 683,000
                           December 31, 2001          $ 743,000
</TABLE>

                           (b) The Borrower will not permit its earnings before
                           interest, taxes, depreciation and amortization for
                           the fiscal quarter to be less than the applicable
                           amount as of the following fiscal quarter end dates:

<TABLE>
<CAPTION>
                           Fiscal Quarter End
                                  Date                 Amount
                           ------------------       ------------

                           <S>                      <C>
                           June 30, 2001            $(2,418,000)
                           September 29, 2001       $ 1,537,000
                           December 31, 2001        $ 2,065,000
</TABLE>

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<PAGE>   11

         4.       MODIFIED TERM NOTE. To evidence certain of the changes
effected by this Amendment, the Borrower shall execute and deliver to the Lender
a Modified, Amended and Restated Term Note substantially in the form attached
hereto as EXHIBIT A (the "Modified Term Note"). Commencing on the Effective
Date, the Modified Term Note shall be the "Term Note" referred to in the Loan
Agreement and other Loan Documents. The Lender may retain the original Term Note
dated January 7, 1993, in its file along with the Modified Term Note of even
date herewith until the indebtedness evidenced thereby has been paid in full.

         5.       MODIFIED LINE OF CREDIT NOTE. To evidence certain of the
changes effected by this Amendment, the Borrower shall execute and deliver to
the Lender a Modified, Amended and Restated Line of Credit Note substantially in
the form attached hereto as EXHIBIT C (the "Modified Line of Credit Note").
Commencing on the Effective Date, the Modified Line of Credit Note shall be the
"Line of Credit Note" referred to in the Loan Agreement and other Loan
Documents. The Lender may retain the original Line of Credit Note dated January
7, 1993, the Modified, Amended and Restated Line of Credit Note dated March 15,
1995, the Modified, Amended and Restated Line of Credit Note dated August 28,
1997, and the Modified, Amended and Restated Line of Credit Note dated January
1, 2000, in its file along with the Modified, Amended and Restated Line of
Credit Note of even date herewith until the indebtedness evidenced thereby has
been paid in full and the Line of Credit has been terminated as set forth in the
Loan Agreement.

         6.       REFERENCES IN LOAN DOCUMENTS. Effective as of the Effective
Date, all references in the Loan Documents to the "Loan Agreement" shall mean
the Loan Agreement, as heretofore modified and amended and as further modified
and amended by this Amendment, and all references to the "Line of Credit Note"
shall mean the Modified, Amended and Restated Line of Credit Note of even date
referred to in this Amendment, and all references to the "Term Note" shall mean
the Modified Term Note of even date referred to in this Amendment. Effective as
of the Effective Date, the words "fifteen million dollars" and figure
"$15,000,000" as used in any of the Loan Documents to refer to the maximum
principal amount of the Line of Credit Master Note, as amended to "ten million
dollars" and "$10,000,000", as further amended to read "thirty million dollars"
and $30,000,000", as further amended to read "ten million dollars" and
"$10,000,000", are further amended to read "eleven million dollars" and
"$11,000,000", respectively.

         7.       CLOSING FEE. The Borrower shall pay to Lender a closing fee
("Closing Fee") equal to $66,934 upon the execution of this Amendment. Subject
to the terms and conditions otherwise applicable to the making of Advances under
the Agreement, the Borrower may request and receive an Advance to pay the
Closing Fee.

         8.       LOAN DOCUMENTS TO REMAIN IN EFFECT. Except as specifically
modified by this Amendment, the Loan Agreement and the other Loan Documents are
incorporated herein by reference as if fully set out and shall remain and/or be
reaffirmed in full force and effect in accordance with their respective terms.

         9.       FINANCIAL MONITORING. Notwithstanding anything to the contrary
herein or in the Agreement, Borrower shall provide Lender the Financial
Statements and Reports required under the Agreement in Section 7.04 (a), (b),
(d) and (e) and such other information as Lender may reasonably request to
verify the Borrowing Base.

                                       11
<PAGE>   12

         10.      NO NOVATION, ETC. Nothing contained in this Amendment shall be
deemed to constitute a novation of the terms of the Loan Documents, or impair
any Liens granted to the Lender thereunder, or affect any of the rights, powers
or remedies of the Lender thereunder, or constitute a waiver of any provision
thereof, except as specifically set forth in this Amendment.

         11.      GOVERNING LAW, SUCCESSORS AND ASSIGNS, ETC. This Amendment
shall be governed by and construed in accordance with the laws of the State of
Alabama and shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and permitted assigns.

         12.      DATE. The date of this Amendment is intended as and for a date
for the convenient identification of this Amendment and for determining the
Effective Date hereof, and is not intended to indicate that this Amendment was
executed and delivered on said date.

         13.      SEVERABILITY. If any provision of this Amendment shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

         14.      COUNTERPARTS. This Amendment may be executed in any number of
counterparts, each of which so executed shall be deemed an original, but all
counterparts shall together constitute but one and the same instrument.

         15.      NO WAIVER. Nothing contained herein shall be construed as a
waiver, acknowledgment or consent to any breach of, or Event of Default under,
the Agreement and/or the Loan Documents not specifically mentioned herein, and
the consents granted herein are effective only in the specific instance and for
the purposes for which given.

         16.      RELEASE. The Borrower hereby releases, satisfies, cancels,
waives, acquits, and forever discharges Lender, its directors, officers,
employees, agents, attorneys, successors and assigns, of and from any and all
claims, demands, actions, or causes of action of any kind or character, arising
at any time in the past, up to and including the Effective Date, which relate or
pertain in any way to the indebtedness under the Loan Agreement and/or
collection thereof.

         17.      AMOUNT OF CURRENT INDEBTEDNESS. The indebtedness owed by the
Borrower to Lender is for the amounts (exclusive of outstanding letters of
credit, ACH exposures and Lender's attorneys fees) herein stated and there are
no defenses, setoffs, or counterclaims with respect to any of them:

<TABLE>
<CAPTION>
                                                    Payoff as of
         General Description      Obligation No.       06/14/01
         -------------------      --------------    ------------

         <S>                      <C>               <C>
         Term Loan #1                 #087445             $
         Term Loan #2                 #087452             $
         Term Loan #3                 #524769             $
</TABLE>

                                       12
<PAGE>   13

         18.      PAYMENT OF LENDER'S LEGAL FEES. The Borrower agrees to pay to
Lender's counsel, Wilmer, Lee & Rowe, P.A., on or before July 1, 2001, all of
its attorney's fees incurred in connection with this Amendment.

                            [SIGNATURE PAGE FOLLOWS]

                                       13
<PAGE>   14

         IN WITNESS WHEREOF, the Borrower and the Lender have caused this
Amendment to be executed and delivered by their duly authorized representatives,
effective as of the date first set forth above.

                                        MARTIN INDUSTRIES, INC.,
                                        a Delaware corporation

                         By                /s/ JAMES W. TRUITT
                            ----------------------------------------------------
                         Its Vice President and Chief Financial Officer
                            ----------------------------------------------------

                                              AMSOUTH BANK,
                                     an Alabama banking corporation

                         By               /s/ DARLENE CHANDLER
                            ----------------------------------------------------
                         Its                 Vice President
                            ----------------------------------------------------

                                       14<PAGE>   1

                                                                   EXHIBIT 10(C)

                         MODIFIED, AMENDED AND RESTATED
                               LINE OF CREDIT NOTE

$11,000,000                                                  Birmingham, Alabama
                                                             As of June 15, 2001

         FOR VALUE RECEIVED, Martin Industries, Inc., a Delaware corporation
(the "Borrower"), hereby promises to pay, on the Line of Credit Termination Date
(such term and other capitalized terms used in this note that are not otherwise
defined herein having the meanings defined for them in the hereinafter-described
Loan Agreement), to the order of AmSouth Bank, an Alabama banking corporation
(the "Lender"), at its Main Office in Birmingham, Alabama, in lawful money of
the United States of America, the principal amount of Eleven Million and No/100
Dollars ($11,000,000), or so much thereof as may heretofore have been advanced
by the Lender under the Line of Credit Master Note in the face amount of
$15,000,000 (the "Initial Note"), the Modified, Amended and Restated Line of
Credit Note in the face amount of $20,000,000 (the "First Modification"), the
Modified Amended and Restated Line of Credit Note in the face amount of
$30,000,000 (the "Second Modification"), and the Modified Amended and Restated
Line of Credit Note in the face amount of $10,000,000 (the "Third
Modification"), which are being extended, renewed and modified hereby or as may
hereafter be advanced under this note, and to pay interest from the date of this
note on sums advanced under the Initial Note, the First Modification, the Second
Modification and the Third Modification, and from the date advanced on
additional sums advanced under this note, until payment in full, on the unpaid
principal balance of the amount advanced hereunder, at the rate per annum
(computed on the basis of the actual number of days elapsed over an assumed year
of 360 days, as more particularly set forth below) equal to the applicable rate
set forth below:

         1.       ADVANCES UP TO AND INCLUDING $10,000,000. This note shall bear
interest on the unpaid principal balance of all amounts advanced under this
note, the Initial Note, the First Modification, the Second Modification, and the
Third Modification up to and including (but not exceeding) $10,000,000, from the
later of (i) the date advanced and (ii) the date of this note, until payment in
full, at a rate per annum equal to one percentage point (100 basis points) in
excess of the rate of interest designated by the Lender from time to time as its
prime rate (the "Prime Rate").

         2.       ADVANCES IN EXCESS OF $10,000,000. This note shall bear
interest on the unpaid principal balance of all amounts advanced under this
note, the Initial Note, the First Modification, the Second Modification, and the
Third Modification in excess of $10,000,000, from the later of (i) the date
advanced and (ii) the date of this note, until payment in full, at a rate per
annum equal to three percentage points (300 basis points) in excess of the Prime
Rate.

         Interest will be computed on the basis of an assumed year of 360 days
for the actual number of days elapsed, meaning that the interest accrued for
each day will equal the amount obtained by multiplying the stated interest rate
applicable on that day by the unpaid principal balance on that day and dividing
the result by 360. Any change in the interest rate on this note because of a
change in the Prime Rate shall take effect on the effective date of such change
in the Prime Rate as announced by the Lender without notice to the undersigned
and without any further action by the Lender.

                                       1
<PAGE>   2

Changes in the Prime Rate are discretionary with the Lender. The interest rate
hereunder is also subject to adjustment upon the occurrence of an Event of
Default under the Loan Agreement dated January 7, 1993, between the Borrower and
the Lender, as amended through June 15, 2001 (the "Loan Agreement"), and under
certain circumstances provided for in the Loan Agreement.

         All interest shall be payable monthly in arrears on the 15th day of
each month in each year for the period ending on the last day of the immediately
preceding calendar month. The first monthly interest payment under this note
shall be due and payable on June 15, 2001. Upon the Line of Credit Termination
Date, all accrued interest shall be due and payable in full.

         The Lender will send the Borrower a monthly billing statement in
advance of each interest payment date (i.e. the 15th day of each month) showing
the interest that accrued on the Line of Credit through the end of the
immediately preceding month and which shall be due and payable on such interest
payment date. On the Line of Credit Termination Date, the Borrower will pay all
of the principal of and interest on the Loan then remaining unpaid.

         This note is a master note, and it is expected that the proceeds of the
loan evidenced hereby will be advanced by the Lender to the Borrower in
installments, as needed for the purposes set forth in the Loan Agreement, upon
compliance with the terms and conditions set forth therein. This note shall be
valid and enforceable as to, and all collateral granted to the Lender as
security for the loan evidenced hereby shall be and remain valid and binding as
security for, the aggregate amount advanced at any time hereunder, whether or
not the full face amount hereof is advanced. Each principal advance and payment
on this note may be reflected by notations made by the Lender on its internal
records (which may be kept on computer or otherwise), and the Lender is hereby
authorized to record on such records all such principal Advances and payments.
The aggregate unpaid amount reflected by the Lender's notations on its internal
records (whether on computer or otherwise) shall be deemed rebuttably
presumptive evidence of the principal amount remaining outstanding and unpaid on
this note. No failure of the Lender so to record any Advance or payment shall
limit or otherwise affect the obligation of the Borrower hereunder with respect
to any Advance, and no payment of principal by the Borrower shall be affected by
the failure of the Lender to so record the same.

         This note is being executed and delivered to modify, amend and restate
in its entirety, effective as of the Effective Date of the Fifth Amendment, the
Line of Credit Note dated January 7, 1993, in the face amount of $15,000,000,
the First Modification dated March 15, 1995, in the face amount of $20,000,000,
the Second Modification dated August 28, 1997, in the face amount of
$30,000,000, and the Third Modification dated January 1, 2000, in the face
amount of $10,000,000. Notwithstanding the execution of this note, the
outstanding indebtedness evidenced by the Initial Note, the First Modification,
the Second Modification, and the Third Modification shall remain in full force
and effect and shall hereafter be evidenced by this note, and nothing contained
herein shall be construed as effecting any novation, payment or accord and
satisfaction of such indebtedness.

         This note is the Modified, Amended and Restated Line of Credit Note
referred to in the Fifth Amendment and is subject to all of the provisions of
the Loan Agreement including those providing for optional prepayment,
acceleration of maturity and adjustment of the interest rate hereunder, all as
set forth in the Loan Agreement. This note is secured by the Security Documents,
as that term is defined in the Loan Agreement. This note is executed in renewal,
extension and modification of the

                                       2
<PAGE>   3

Initial Note, the First Modification, the Second Modification, and the Third
Modification, and is given in substitution therefor. The terms of this note
shall be applicable commencing on the Effective Date. The terms of the Initial
Note, the First Modification, the Second Modification, and the Third
Modification shall continue to be applicable prior to the Effective Date. The
Lender may retain the Initial Note, the First Modification, the Second
Modification, and the Third Modification in its file along with this note until
the indebtedness evidenced hereby has been paid in full and the Line of Credit
has been terminated as set forth in the Loan Agreement.

         This note, as modified, amended and restated, shall continue to be
secured by all of the Security Documents described in the Loan Agreement, as
amended. Nothing contained herein shall be construed to release, satisfy,
discharge, terminate, subordinate or otherwise adversely affect or impair (a)
the validity or enforceability of the indebtedness evidenced by the Initial
Note, the First Modification, the Second Modification, and the Third
Modification, as modified, amended and restated hereby, (b) the validity,
perfection or priority of the Liens of the Security Documents as security for
such indebtedness, or of any of the other Loan Documents, or (c) the liability
of any obligor for the repayment of such indebtedness.

                            [SIGNATURE PAGE FOLLOWS.]

                                       3
<PAGE>   4

                                        MARTIN INDUSTRIES, INC.

                    By                    /s/ JAMES W. TRUITT
                       ---------------------------------------------------------
                                      Its Vice President and CFO

                                             P.O. Box 128
                                       301 East Tennessee Street
                                        Florence, Alabama 35630

                                       Taxpayer I.D.: 63-0133054

                                       4

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