DAYTON 3HGH1 Square Smoke Damper,23-3/4 In. W
$544.99
23.75 In.H 12 In.L 24 In.W Mtrzd Stl Smke Dampr, For Nominal Duct Diameter Not Applicable, Damper Application Smoke, Number of Panels 1, Overall Height 23 3/4 in, Overall Length 12 in, Rough Opening Shape Square, For Duct Shape Square, Overall Width...