The Blastgate Company BGF-12 Full Blast Gate, 12 in Dia Duct, 26-3/4 in L, 13-1/4 in W, Die Cast Aluminum
The Blastgate Company Full Blast Gate, 12 in Dia Duct, 26-3/4 in Length, 13-1/4 in Width, Die Cast Aluminum, For Use With: Ducts