<SEC-DOCUMENT>0000893691-18-000013-index.html : 20180326
<SEC-HEADER>0000893691-18-000013.hdr.sgml : 20180326
<ACCEPTANCE-DATETIME>20180326162356
ACCESSION NUMBER:		0000893691-18-000013
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20180326
DATE AS OF CHANGE:		20180326
EFFECTIVENESS DATE:		20180326

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASONITE INTERNATIONAL CORP
		CENTRAL INDEX KEY:			0000893691
		STANDARD INDUSTRIAL CLASSIFICATION:	MILLWOOD, VENEER, PLYWOOD & STRUCTURAL WOOD MEMBERS [2430]
		IRS NUMBER:				980377314
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1229

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11796
		FILM NUMBER:		18712980

	BUSINESS ADDRESS:	
		STREET 1:		ONE TAMPA CITY CENTER
		STREET 2:		201 NORTH FRANKLIN STREET, SUITE 300
		CITY:			TAMPA
		STATE:			FL
		ZIP:			33602
		BUSINESS PHONE:		813-877-2726

	MAIL ADDRESS:	
		STREET 1:		ONE TAMPA CITY CENTER
		STREET 2:		201 NORTH FRANKLIN STREET, SUITE 300
		CITY:			TAMPA
		STATE:			FL
		ZIP:			33602

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREMDOR INC
		DATE OF NAME CHANGE:	19941208
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a2018scheddefa14-a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a2018scheddefa14-a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>pxn1838418.jpg
<TEXT>
Document 2 - file: pxn1838418.jpg

</DOCUMENT>
</SEC-DOCUMENT>