Document:

<PAGE>
                                                                   Exhibit 10.30

                                 AMENDMENT NO. 3

          AMENDMENT NO. 3 (this "Amendment"), dated as of July 15, 2005, to that
certain Credit and Guaranty Agreement, dated as of June 4, 2004, as amended (the
"Credit Agreement"; capitalized terms used herein and not defined shall have the
meaning set forth in the Credit Agreement), among MAAX CORPORATION, a Nova
Scotia unlimited company ("Company"), BEAUCELAND CORPORATION, a Nova Scotia
unlimited company ("Holdings"), CERTAIN SUBSIDIARIES OF HOLDINGS, as Guarantors,
the Lenders party thereto from time to time, GOLDMAN SACHS CREDIT PARTNERS L.P.,
as Joint Lead Arranger and as Syndication Agent, ROYAL BANK OF CANADA, as
Administrative Agent (in such capacity, "Administrative Agent") and as
Collateral Agent, ROYAL BANK OF CANADA, ACTING THROUGH ITS BUSINESS GROUP RBC
CAPITAL MARKETS, as Joint Lead Arranger, and MERRILL LYNCH & CO., MERRILL LYNCH,
PIERCE, FENNER & SMITH INCORPORATED, as Joint Lead Arranger and as Documentation
Agent.

                                  WITNESSETH:

          WHEREAS, Company desires to amend the Credit Agreement to modify its
monthly reporting obligations; and

          WHEREAS, pursuant to Section 10.5 of the Credit Agreement, Company and
each of the undersigned Lenders hereby agree to amend the Credit Agreement as
set forth herein.

          NOW, THEREFORE, in consideration of the foregoing, and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto hereby agree as follows:

          SECTION ONE - Amendment. Subject to the satisfaction of the conditions
set forth in Section Two hereof, Section 5.1(a) of the Credit Agreement is
hereby amended by deleting "As soon as available, and in any event within 40
days after the end of each month ending after the Closing Date," and replacing
it with:

          "As soon as available, and in any event within 40 days after the end
     of each of the first two months of each Fiscal Quarter ending after the
     Closing Date,".

          SECTION TWO - Conditions to Effectiveness. This Amendment shall become
effective as of the Closing Date as if entered into on the Closing Date when,
and only when, Administrative Agent shall have received counterparts of this
Amendment executed by Company and the Requisite Lenders. The effectiveness of
this Amendment (other than Sections Five, Six and Seven hereof) is conditioned
upon the accuracy of the representations and warranties set forth in Section
Three hereof.

          SECTION THREE - Representations and Warranties; Covenants. In order to
induce the Lenders to enter into this Amendment, the Company represents and
warrants to each of the Lenders and the Agents that after giving effect to this
Amendment, (x) no Event of Default or Default has occurred and is continuing;
and (y) the representations and warranties contained in the Credit Agreement and
in the other Credit Documents are true and correct in all material
<PAGE>
respects (and any such representations and warranties that contain a materiality
or Material Adverse Effect qualification are true and correct in all respects)
on and as of the date hereof to the same extent as though made on and as of the
date hereof, except to the extent such representations and warranties
specifically relate to an earlier date, in which case such representations and
warranties were true and correct in all material respects on and as of such
earlier date.

          SECTION FOUR - Reference to and Effect on the Credit Agreement and the
Notes. On and after the effectiveness of this Amendment, each reference in the
Credit Agreement to "this Agreement", "hereunder", "hereof" or words of like
import referring to the Credit Agreement, and each reference in the Notes and
each of the other Credit Documents to "the Credit Agreement", "thereunder",
"thereof" or words of like import referring to the Credit Agreement, shall mean
and be a reference to the Credit Agreement, as amended by this Amendment. The
Credit Agreement, the Notes and each of the other Credit Documents, as
specifically amended by this Amendment, are and shall continue to be in full
force and effect and are hereby in all respects ratified and confirmed. Without
limiting the generality of the foregoing, the Collateral Documents and all of
the Collateral described therein do and shall continue to secure the payment of
all Obligations of the Credit Parties under the Credit Documents. The execution,
delivery and effectiveness of this Amendment shall not, except as expressly
provided herein, operate as an amendment or waiver of any right, power or remedy
of any Lender or any Agent under any of the Credit Documents, nor constitute an
amendment or waiver of any provision of any of the Credit Documents.

          SECTION FIVE - Costs, Expenses and Taxes. Company agrees to pay all
reasonable costs and expenses of the Agents in connection with the preparation,
execution and delivery of this Amendment and the other instruments and documents
to be delivered hereunder, if any (including, without limitation, the reasonable
fees and expenses of Cahill Gordon & Reindel LLP) in accordance with the terms
of Section 10.2 of the Credit Agreement.

          SECTION SIX - Execution in Counterparts. This Amendment may be
executed in any number of counterparts and by different parties hereto in
separate counterparts, each of which when so executed shall be deemed to be an
original and all of which taken together shall constitute but one and the same
agreement. Delivery of an executed counterpart of a signature page to this
Amendment by facsimile shall be effective as delivery of a manually executed
counterpart of this Amendment.

          SECTION SEVEN - Governing Law. This Amendment shall be governed by,
and construed in accordance with, the laws of the State of New York, without
regard to the principles of conflicts of laws thereof to the extent that the
application of the laws of another jurisdiction would be required thereby.

                            [SIGNATURE PAGES FOLLOW]

                                      -2-
<PAGE>
          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be duly executed and delivered as of the day and year first above written.

                                      MAAX CORPORATION

                                      By: /s/ Denis Aubin
                                          --------------------------------------
                                      Name: Denis Aubin
                                      Title: Executive Vice President
                                             & Chief Financial Officer

                                      -3-
<PAGE>
                                      UBS AG, Stamford Branch
                                         as a Lender

                                      By: /s/ Wilfred V. Saint
                                          --------------------------------------
                                      Name: Wilfred V. Saint
                                      Title: Director, Banking Products
                                             Services, US

                                      If second signature is necessary:

                                      By: /s/ Toba Lumbantobing
                                          --------------------------------------
                                      Name: Toba Lumbantobing
                                      Title: Associate Director, Banking
                                             Products Services, US

                                      -4-
<PAGE>
                                      National City Bank, Canada Branch
                                         as a Lender

                                      By: /s/ J. Andrew Riddell
                                          --------------------------------------
                                      Name: J. Andrew Riddell
                                      Title: Vice President, National City Bank,
                                             Canada Branch

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -5-
<PAGE>
                                      CITIBANK, N.A., Canadian Branch
                                         as a Lender

                                      By: /s/ Isabelle Cote
                                          --------------------------------------
                                      Name: Isabelle Cote
                                      Title: Director

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -6-
<PAGE>
                                      Comerica Bank
                                         as a Lender

                                      By: /s/ Marc D. Adams
                                          --------------------------------------
                                      Name: Marc D. Adams
                                      Title: Director, Comerica Bank Private
                                             Equity Group

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -7-
<PAGE>
                                      La Caisse centrale Desjardins du Quebec
                                         as a Lender

                                      By: /s/ Michel Voyer
                                          --------------------------------------
                                      Name: Michel Voyer
                                      Title: Senior Manager

                                      By: /s/ Sylvain Gascon
                                          --------------------------------------
                                      Name: Sylvain Gascon
                                      Title: Vice president

                                      -8-
<PAGE>
                                      Comerica Bank, Canada Branch
                                         as a Lender

                                      By: /s/ Robert Rosen
                                          --------------------------------------
                                      Name: Robert Rosen
                                      Title: Vice-President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -9-
<PAGE>
                                      Merrill Lynch Capital Canada Inc.
                                         as a Lender

                                      By: /s/ Marcelo Cosma
                                          --------------------------------------
                                      Name: Marcelo Cosma
                                      Title: Vice President

                                      -10-
<PAGE>
                                      Bayerische Hypo-und Vereinsbank AG,
                                         New York Branch
                                         as a Lender

                                      By: /s/ G. Burke
                                          --------------------------------------
                                      Name: G. Burke
                                      Title: Director

                                      If second signature is necessary:

                                      By: /s/ H. Selarka
                                          --------------------------------------
                                      Name: H. Selarka
                                      Title: Associate Director

                                      -11-
<PAGE>
                                      Bank of Montreal
                                         as a Lender

                                      By: /s/ Luc Bernier
                                          --------------------------------------
                                      Name: Luc Bernier
                                      Title: Directeur Principal

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -12-
<PAGE>
                                      KZH Soleil LLC
                                         as a Lender

                                      By: /s/ Susan Lee
                                          --------------------------------------
                                      Name: Susan Lee
                                      Title: Authorized Agent

                                      If second signature is necessary:

                                      By: N/A
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -13-
<PAGE>
                                      KZH Soleil-2 LLC
                                         as a Lender

                                      By: /s/ Susan Lee
                                          --------------------------------------
                                      Name: Susan Lee
                                      Title: Authorized Agent

                                      If second signature is necessary:

                                      By: N/A
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -14-
<PAGE>
                                      SENIOR DEBT PORTFOLIO
                                         By: Boston Management and Research as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -15-
<PAGE>
                                      EATON VANCE SENIOR INCOME TRUST
                                         By: Eaton Vance Management as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -16-
<PAGE>
                                      EATON VANCE INSTITUTIONAL SENIOR LOAN FUND
                                         By: Eaton Vance Management as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -17-
<PAGE>
                                      GRAYSON & CO
                                         By: Boston Management and Research as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -18-
<PAGE>
                                      EATON VANCE LIMITED DURATION INCOME FUND
                                         By: Eaton Vance Management as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -19-
<PAGE>
                                      EATON VANCE SENIOR FLOATING-RATE TRUST
                                         By: Eaton Vance Management as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -20-
<PAGE>
                                      EATON VANCE SHORT DURATION
                                         DIVERSIFIED INCOME FUND
                                         By: Eaton Vance Management as
                                             Investment Advisor
                                         as a Lender

                                      By: /s/ Michael B. Botthof
                                          --------------------------------------
                                      Name: Michael B. Botthof
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -21-
<PAGE>
                                      PPM MONARCH BAY FUNDING LLC,
                                         as a Lender

                                      By: /s/ M. Cristina Higgins
                                          --------------------------------------
                                      Name: M. Cristina Higgins
                                      Title: Assistant Vice President

                                      -22-
<PAGE>
                                      PPM SPYGLASS FUNDING TRUST,
                                         as a Lender

                                      By: /s/ Ann E. Morris
                                          --------------------------------------
                                      Name: Ann E. Morris
                                      Title: Authorized Agent

                                      -23-
<PAGE>
                                      WATERVILLE FUNDING LLC,
                                         as a Lender

                                      By: /s/ M. Cristina Higgins
                                          --------------------------------------
                                      Name: M. Cristina Higgins
                                      Title: Assistant Vice President

                                      -24-
<PAGE>
                                      National Bank of Canada - New York Branch
                                         as a Lender

                                      By: /s/ Vincent Lima
                                          --------------------------------------
                                      Name: Vincent Lima
                                      Title: Vice President

                                      By: /s/ Jeff Forgach
                                          --------------------------------------
                                      Name: Jeff Forgach
                                      Title: Assistant Vice President

                                      -25-
<PAGE>
                                      Royal Bank of Canada
                                         as a Lender

                                      By: /s/ Dustin Craven
                                          --------------------------------------
                                      Name: Dustin Craven
                                      Title: Attorney-in-fact

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -26-
<PAGE>
                                      SunAmerica Senior Floating Rate Fund, Inc.
                                         By: AIG Global Investment Corp.
                                             Investment Sub-Adviser

                                      By: /s/ W. Jeffrey Baxter
                                          --------------------------------------
                                      Name: W. Jeffrey Baxter
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -27-
<PAGE>
                                      Galaxy CLO 2003-1, Ltd.
                                         By: AIG Global Investment Corp.
                                         Its Investment Adviser

                                      By: /s/ W. Jeffrey Baxter
                                          --------------------------------------
                                      Name: W. Jeffrey Baxter
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -28-
<PAGE>
                                      SunAmerica Life Insurance Company
                                         By: AIG Global Investment Corp.
                                         Its Investment Adviser

                                      By: /s/ W. Jeffrey Baxter
                                          --------------------------------------
                                      Name: W. Jeffrey Baxter
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -29-
<PAGE>
                                      Galaxy III CLO, Ltd.
                                         By: AIG Global Investment Corp.
                                         Its Investment Adviser

                                      By: /s/ W. Jeffrey Baxter
                                          --------------------------------------
                                      Name: W. Jeffrey Baxter
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -30-
<PAGE>
                                      MERRILL LYNCH CREDIT PRODUCTS, LLC
                                         as a Lender

                                      By: /s/ Neyda Darias
                                          --------------------------------------
                                      Name: Neyda Darias
                                      Title: Vice President

                                      If second signature is necessary:

                                      By:
                                          --------------------------------------
                                      Name:
                                            ------------------------------------
                                      Title:
                                             -----------------------------------

                                      -31-<PAGE>
                                                        Exhibit 10.31

                                 AMENDMENT NO. 4
                                 ---------------

     Amendment No. 4 (this "Amendment"), dated as of August 31, 2005, to that
certain Credit and Guaranty Agreement, dated as of June 4, 2004, as amended (the
"Credit Agreement"; capitalized terms used herein and not defined shall have the
meaning set forth in the Credit Agreement), among MAAX CORPORATION, a Nova
Scotia unlimited company ("Company"), BEAUCELAND CORPORATION, a Nova Scotia
unlimited company ("Holdings"), CERTAIN SUBSIDIARIES OF HOLDINGS, as Guarantors,
the Lenders party thereto from time to time, GOLDMAN SACHS CREDIT PARTNERS L.P.,
as Joint Lead Arranger and as Syndication Agent, ROYAL BANK OF CANADA, as
Administrative Agent (in such capacity, "Administrative Agent") and as
Collateral Agent, ROYAL BANK OF CANADA, ACTING THROUGH ITS BUSINESS GROUP RBC
CAPITAL MARKETS, as Joint Lead Arranger, and MERRILL LYNCH & CO., MERRILL LYNCH,
PIERCE, FENNER & SMITH INCORPORATED, as Joint Lead Arranger and as Documentation
Agent.

                              W I T N E S S E T H :
                              - - - - - - - - - -

     WHEREAS, Company desires to amend the Credit Agreement to modify the
leverage ratio covenant; and

     WHEREAS, pursuant to Section 10.5 of the Credit Agreement Company and
Administrative Agent hereby agree to amend the Credit Agreement as set forth
herein.

     NOW, THEREFORE, in consideration of the foregoing, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto hereby agree as follows:

     SECTION ONE - Amendment. Subject to the satisfaction of the conditions set
forth in Section Two hereof, Section 6.8(c) of the Credit Agreement is hereby
amended and restated in its entirety to read:

     Leverage Ratio. Company shall not permit the Leverage Ratio as of the last
day of any Fiscal Quarter, beginning with the Fiscal Quarter ending August 31,
2004, to exceed the ratio indicated below:

        ==========================================================
                  Fiscal Quarter Ending             Leverage Ratio
        ----------------------------------------------------------
        On or prior to May 31, 2005                    6.00:1.00
        ----------------------------------------------------------
        August 31, 2005                                6.50:1.00
        ----------------------------------------------------------
        November 30, 2005                              5.75:1.00
        ----------------------------------------------------------
        February 28, 2006                              5.50:1.00
        ----------------------------------------------------------
        May 31, 2006                                   5.25:1.00
        ----------------------------------------------------------
        August 31, 2006                                5.25:1.00
        ----------------------------------------------------------
        November 30, 2006                              5.25:1.00
        ----------------------------------------------------------
        February 28, 2007                              5.00:1.00
        ----------------------------------------------------------
        May 31, 2007                                   4.75:1.00
        ==========================================================

<PAGE>

        ==========================================================
                  Fiscal Quarter Ending             Leverage Ratio
        ----------------------------------------------------------
        August 31, 2007                                4.75:1.00
        ----------------------------------------------------------
        November 30, 2007                              4.50:1.00
        ----------------------------------------------------------
        February 29, 2008                              4.25:1.00
        ----------------------------------------------------------
        May 31, 2008 and thereafter                    3.75:1.00
        ==========================================================

     SECTION TWO - Conditions to Effectiveness. This Amendment shall become
effective as of the Closing Date as if entered into on the Closing Date when,
and only when, Administrative Agent shall have received (x) counterparts of this
Amendment executed by Company and Administrative Agent and (y) consents to this
Amendment from the Requisite Lenders. The effectiveness of this Amendment (other
than Sections Five, Six and Seven hereof) is conditioned upon the accuracy of
the representations and warranties set forth in Section Three hereof.

     SECTION THREE - Representations and Warranties; Covenants. In order to
induce the Lenders to consent to this Amendment, the Company represents and
warrants to each of the Lenders and the Agents that after giving effect to this
Amendment, (x) no Event of Default or Default has occurred and is continuing;
and (y) the representations and warranties contained in the Credit Agreement and
in the other Credit Documents are true and correct in all material respects (and
any such representations and warranties that contain a materiality or Material
Adverse Effect qualification are true and correct in all respects) on and as of
the date hereof to the same extent as though made on and as of the date hereof,
except to the extent such representations and warranties specifically relate to
an earlier date, in which case such representations and warranties were true and
correct in all material respects on and as of such earlier date.

     SECTION FOUR - Reference to and Effect on the Credit Agreement and the
Notes. On and after the effectiveness of this Amendment, each reference in the
Credit Agreement to "this Agreement", "hereunder", "hereof" or words of like
import referring to the Credit Agreement, and each reference in the Notes and
each of the other Credit Documents to "the Credit Agreement", "thereunder",
"thereof" or words of like import referring to the Credit Agreement, shall mean
and be a reference to the Credit Agreement, as amended by this Amendment. The
Credit Agreement, the Notes and each of the other Credit Documents, as
specifically amended by this Amendment, are and shall continue to be in full
force and effect and are hereby in all respects ratified and confirmed. Without
limiting the generality of the foregoing, the Collateral Documents and all of
the Collateral described therein do and shall continue to secure the payment of
all Obligations of the Credit Parties under the Credit Documents. The execution,
delivery and effectiveness of this Amendment shall not, except as expressly
provided herein, operate as an amendment or waiver of any right, power or remedy
of any Lender or any Agent under any of the Credit Documents, nor constitute an
amendment or waiver of any provision of any of the Credit Documents.

     SECTION FIVE - Costs, Expenses and Taxes. Company agrees to pay all
reasonable costs and expenses of the Agents in connection with the preparation,
execution and delivery of this Amendment and the other instruments and documents
to be delivered hereunder, if any (including, without limitation, the reasonable
fees and expenses of Cahill Gordon & Reindel LLP) in accordance with the terms
of Section 10.2 of the Credit Agreement.

                                      -2-
<PAGE>

     SECTION SIX - Execution in Counterparts. This Amendment may be executed in
any number of counterparts and by different parties hereto in separate
counterparts, each of which when so executed shall be deemed to be an original
and all of which taken together shall constitute but one and the same agreement.
Delivery of an executed counterpart of a signature page to this Amendment by
facsimile shall be effective as delivery of a manually executed counterpart of
this Amendment.

     SECTION SEVEN - Governing Law. This Amendment shall be governed by, and
construed in accordance with, the laws of the State of New York, without regard
to the principles of conflicts of laws thereof to the extent that the
application of the laws of another jurisdiction would be required thereby.

                            [SIGNATURE PAGES FOLLOW]

                                      -3-
<PAGE>

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

                                   MAAX CORPORATION

                                   By: /s/ Denis Aubin
                                       -----------------------------------------
                                       Name:   Denis Aubin
                                       Title:  Executive Vice President &
                                               Chief Financial Officer

                                      -4-
<PAGE>

                                   ROYAL BANK OF CANADA, as Administrative Agent

                                   By:    /s/ David Wheatley
                                          --------------------------------------
                                          Name:   David Wheatley
                                          Title:  Manager, Agency

                                      -5-

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