DAYTON 2TGD3 Rectangular Fire Damper,5-3/4x11-3/4 In.
$58.39
11.8 In.H 5.8 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 5 3/4 in, Rough Opening Diameter Not Applicable, Rough Opening Shape Rectangular,...