UNITED ~~STATES~~ ~~SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549~~STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of ~~May 2007~~December 2008.

Commission File Number: 333-139791

MASONITE INTERNATIONAL INC. ~~(Name of registrant)~~

~~1600 Britannia Road East Mississauga, Ontario L4W 1J2~~ (~~Address~~Name of ~~Principal Executive Office~~registrant)

~~Indicate~~1820 byMatheson ~~check~~Blvd., ~~mark whether~~Unit ~~the registrant files or will file annual reports under cover Form 20-F or Form 40-F.~~B4

xMississauga, ~~Form~~Ontario ~~20-F~~L4W 0B3 ~~o Form 40-F~~Canada

~~Indicate~~(Address byof ~~check mark if~~Principal ~~the~~Executive ~~registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b~~Office)~~(1): o~~

Indicate by check mark if whether the registrant isfiles ~~submitting~~or ~~the~~will ~~Form~~file ~~6-K~~annual inreports ~~paper~~under ascover ~~permitted by Regulation S~~Form 20-TF or ~~Rule 101(b)(7): o~~Form 40-F.

~~Indicate~~x ~~by check mark whether by furnishing the information contained in this~~ Form, ~~the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3~~20-~~2(b)~~F ~~under~~o ~~the~~Form ~~Securities Exchange Act of 1934~~40-F

oIndicate ~~Yes~~by xcheck mark Noif the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): o

IfIndicate ~~“Yes”~~by ~~is marked,~~check ~~indicate~~mark ~~below~~if the ~~file~~registrant ~~number~~is ~~assigned~~submitting to the ~~registrant~~Form 6-K in ~~connection~~paper ~~with~~as permitted by ~~Rule~~Regulation ~~12g3~~S-2T Rule 101(b)(7): ~~82-~~ o

~~SIGNATURES~~Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934

~~Pursuant~~o toYes ~~the~~x ~~requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.~~No

	MASONITE INTERNATIONAL INC.
Date: May 29, 2007
	By:	/s/ FREDERICK ARNOLD
	Name:	Frederick Arnold
	Title:	Executive Vice-President, Finance

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A

~~EXHIBIT INDEX~~SIGNATURES

Exhibit				Description of Exhibit
99.1				First Quarter Unaudited Interim Consolidated Financial Statements
99.2				Management’s Discussion & Analysis of Financial Results
99.3				Quantitative and Qualitative Disclosures about Mark Risk
99.4				Other Information

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		MASONITE INTERNATIONAL INC.


Date: December 23, 2008
	By:	/s/ Anthony (Tony) DiLucente
	Name:	Anthony (Tony) DiLucente
	Title:	Executive Vice President and Chief Financial Officer

EXHIBIT INDEX

Exhibit		Description of Exhibit

99.1		Third Quarter Unaudited Interim Consolidated Financial Statements

99.2		Management’s Discussion & Analysis of Financial Results

99.3		Quantitative and Qualitative Disclosures about Market Risk

99.4		Other Information

Filing Compare · MASONITE INTERNATIONAL INC.