11.8 In.H 5.8 In.W 3.7 In.L GStl Grvty Fire Dampr, 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,...
11.8 In.H 5.8 In.W 3.7 In.L GStl Grvty Fire Dampr, 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,...