Best Seller | DAYTON 2FTX5 Damper,Vert/Horiz Mtg,13 3/4 Sq 13.75 In.H-W 4.5 In.L Alu Univ Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 14 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 13 3/4 in, Rough Opening Diameter 14... ... more DAYTON 2FTX5 Damper,Vert/Horiz Mtg,13 3/4 Sq 13.75 In.H-W 4.5 In.L Alu Univ Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 14 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 13 3/4 in, Rough Opening Diameter 14... | | $43.19 go to store |