DAYTON 2TGD7 Rectangular Fire Damper,11-3/4x13-3/4 In
$71.59
13.8 In.H 11.8 In.W 3.7 In.L GStl Sprng Fire Dmpr, Damper Application Fire, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity None, Overall Height 11 3/4 in, Rough Opening Diameter Not Applicable, Rough Opening Shape...