Round Fire/Smoke Damper, 24V, 15-5/8 In. D, DAYTON, Mfr# 3HGK7

7.9 In.H 16 In.L 15.7 In.W GStl Fire/Smke Dampr, For Nominal Duct Diameter 8 in, Damper Application Fire and Smoke, Number of Panels 1, Overall Height 7 7/8 in, Overall Length 16 in, Rough Opening Shape Square, For Duct Shape Square, Overall Width 15 5/8 in, Frame Material Thickness 20 ga, Blade Material Galvanized Steel, Maximum Air Pressure 4 in wg, Overall Diameter 7 7/8 in, Rough Opening Width 8 in, Damper Type Dynamic, Maximum Air Velocity 3000 fpm, Nameplate Voltage 24V DC