EXHIBIT 21

SUBSIDIARIES

The following is a list of the subsidiaries of Gibraltar Industries, Inc. as of June 30, 2006. The names of indirectly owned subsidiaries are indented under the names of their respective parent corporations:

Gibraltar Steel Corporation of New York			New York
	Wm. R. Hubbell Steel Corporation		Illinois
	Gibraltar of Nevada, Inc.		Nevada
	Southeastern Metals Manufacturing Company, Inc.		Florida
	United Steel Products Company		Minnesota
	Gibraltar of Michigan, Inc.		Michigan
	Gibraltar of Indiana, Inc.		Michigan
	K & W Metal Fabricators, LLC		Colorado
	HT Liquidating Corp.		Delaware
	BC Liquidating Corp.		Michigan
	Gibraltar of Ohio, Inc.		Delaware
		Gibraltar of Illinois, Inc.	Illinois
	Gibraltar of Pennsylvania		Pennsylvania
	GSC Flight Services Corp.		New York
	GIT Limited		New York
	Gibraltar International, Inc.		Delaware
		3073819 Nova Scotia Company	Nova Scotia, Canada
	Gibraltar Pacific, Inc.		Mauritius
		SCM Metal Products (Suzhou) Co., Ltd.	China
	Solar of Michigan, Inc.		Delaware
	Construction Metals, LLC		California
	Air Vent Inc.		Delaware
	GSCNY Corp.		Delaware
	Former Heat Treat Liquidation Corp.		Delaware
		Former Leasing Liquidation LLC	Delaware
	SCM Metal Products, Inc.		Delaware
	Renown Specialties Company, Ltd.		Ontario, Canada
	Alabama Metal Industries Corporation		Delaware
		Diamond Perforated Metals, Inc.	California
		Seasafe, Inc.	Louisiana
		AMICO Canada, Inc.	Canada
		International Grating, Inc.	Texas
		Gator Grate, Inc.	Louisiana
Gibraltar Strip Steel, Inc.			Delaware
Cleveland Pickling, Inc.			Delaware
Solar Group, Inc.			Delaware
Appleton Supply Co., Inc.			Delaware