<SEC-DOCUMENT>0000930413-18-002027-index.html : 20180615
<SEC-HEADER>0000930413-18-002027.hdr.sgml : 20180615
<ACCEPTANCE-DATETIME>20180615165751
ACCESSION NUMBER:		0000930413-18-002027
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		10
FILED AS OF DATE:		20180615
DATE AS OF CHANGE:		20180615

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GRIFFON CORP
		CENTRAL INDEX KEY:			0000050725
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL DOORS, SASH, FRAMES, MOLDING & TRIM [3442]
		IRS NUMBER:				111893410
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-224727
		FILM NUMBER:		18902820

	BUSINESS ADDRESS:	
		STREET 1:		712 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2129575000

	MAIL ADDRESS:	
		STREET 1:		712 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSTRUMENT SYSTEMS CORP /DE/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B5
<SEQUENCE>1
<FILENAME>c91356_424b5.htm
<TEXT>
Document 1 - file: c91356_424b5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>griffonxcorporationx1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: griffonxcorporationx1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>c91356xflowchartx1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: c91356xflowchartx1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>c91356xflowchartx2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: c91356xflowchartx2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>c91356xbarchartx1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: c91356xbarchartx1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>c91356xpiechartx13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: c91356xpiechartx13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>c91356xbarchartx2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: c91356xbarchartx2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>c91356xbarchartx3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: c91356xbarchartx3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>c91356xpiechartx14.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: c91356xpiechartx14.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>griffonxcorporationx2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: griffonxcorporationx2.jpg

</DOCUMENT>
</SEC-DOCUMENT>