DAYTON 3HGK4 Square Fire/Smoke Damper,17-3/4 In. W
$625.99
17.75 In.H 16 In.L 18 In.W GStl Fire/Smke Dampr, For Nominal Duct Diameter Not Applicable, Damper Application Fire and Smoke, Number of Panels 1, Overall Height 17 3/4 in, Overall Length 16 in, Rough Opening Shape Square, For Duct Shape Square,...