SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
X	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Centerbridge Special GP Investors, L.L.C. (Last) (First) (Middle) 375 PARK AVENUE, 12TH FLOOR (Street) NEW YORK NY 10152 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MASONITE INTERNATIONAL CORP [ DOOR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 09/10/2013
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares	09/10/2013		S		3,638	D	$51	1,026,690	I	See footnotes(1)(4)(5)(6)
Common Shares	09/10/2013		S		6,550	D	$51	1,848,551	I	See footnotes(2)(4)(5)(6)
Common Shares	09/10/2013		S		2,312	D	$51	652,708	I	See footnotes(3)(4)(5)(6)
Common Shares	09/17/2013		S		203,712	D	$50.2857	822,978	I	See footnotes(1)(4)(5)(6)
Common Shares	09/17/2013		S		366,781	D	$50.2857	1,481,770	I	See footnotes(2)(4)(5)(6)
Common Shares	09/17/2013		S		129,507	D	$50.2857	523,201	I	See footnotes(3)(4)(5)(6)
Common Shares	09/18/2013		S		87,305	D	$51.25	735,673	I	See footnotes(1)(4)(5)(6)
Common Shares	09/18/2013		S		157,192	D	$51.25	1,324,578	I	See footnotes(2)(4)(5)(6)
Common Shares	09/18/2013		S		55,503	D	$51.25	467,698	I	See footnotes(3)(4)(5)(6)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* Centerbridge Special GP Investors, L.L.C. (Last) (First) (Middle) 375 PARK AVENUE, 12TH FLOOR (Street) NEW YORK NY 10152 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Centerbridge Special Credit Partners, L.P. (Last) (First) (Middle) 375 PARK AVENUE 12TH FLOOR (Street) NEW YORK NY 10152 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Centerbridge Special Credit Partners General Partner, L.P. (Last) (First) (Middle) 375 PARK AVENUE, 12TH FLOOR (Street) NEW YORK NY 10152 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. These Common Shares are held by Centerbridge Credit Partners, L.P. ("Credit Partners").

2. These Common Shares are held by Centerbridge Credit Partners Master, L.P. ("Credit Partners Master").

3. These Common Shares are held by Centerbridge Special Credit Partners, L.P. ("Special Credit Partners" and, together with Credit Partners and Credit Partners Master, the "Centerbridge Funds").

4. Centerbridge Credit GP Investors, L.L.C. ("GP Investors") is the general partner of Centerbridge Credit Partners General Partner, L.P. ("Credit GP"), which, in turn, is the general partner of Centerbridge Credit Partners, L.P., and, as such GP Investors and Credit GP may be deemed to beneficially own the securities held by Credit Partners. Centerbridge Credit Offshore GP Investors, L.L.C. ("Offshore GP Investors") is the general partner of Centerbridge Credit Partners Offshore General Partner, L.P. ("Offshore GP"), which, in turn, is the general partner of Centerbridge Credit Partners Master, L.P., and, as such Offshore GP Investors and Offshore GP may be deemed to beneficially own the securities held by Credit Partners Master. (Continued in footnote 5)

5. Centerbridge Special GP Investors, L.L.C. ("SC GP Investors") is the general partner of Centerbridge Special Credit Partners General Partner, L.P. ("SC GP"), which, in turn, is the general partner of Centerbridge Special Credit Partners, L.P., and, as such SC GP Investors and SC GP may be deemed to beneficially own the securities held by Special Credit Partners. Messrs. Gallogy and Aronson are the managing members of each of GP Investors, Offshore GP Investors and SC GP Investors, and, as such may be deemed to beneficially own the securities held by the Centerbridge Funds. Except for the Centerbridge Funds with respect to the securities held by such entity, each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. (Continued in footnote 6)

6. The filing of this statement by the Reporting Persons shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, such Reporting Persons are the beneficial owners of the securities reported herein other than the securities held directly by such Reporting Person.

Remarks:

Due to the limitations of the Securities and Exchange Commission's EDGAR system, GP Investors, Credit GP, Credit Partners Master, Credit Partners, Offshore GP, Offshore GP Investors, Mark T. Gallogly and Jeffrey H. Aronson have filed a separate Form 4.

	Centerbridge Special Credit Partners, L.P., By: Centerbridge Special Credit Partners General Partner, L.P., its general partner, By: Centerbridge Special GP Investors, L.L.C., its general partner, By: /s/ Mark T. Gallogly, Authorized Signatory	09/30/2013
	Centerbridge Special Credit Partners General Partner, L.P., By: Centerbridge Special GP Investors, L.L.C., its general partner, By: /s/ Mark T. Gallogly, Authorized Signatory	09/30/2013
	Centerbridge Special GP Investors, L.L.C., By: /s/ Mark T. Gallogly, Authorized Signatory	09/30/2013
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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