DAYTON 3C310 36 in Backdraft Damper / Wall Shutter, 36-1/2 in x 36-1/2 in

39 In.H-W 5.75 In.L Alu Wall Vent Shutter, Damper Application Backdraft, For N... 39 In.H-W 5.75 In.L Alu Wall Vent Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 2, Maximum Air Velocity 2500 fpm, Overall Height 39 in, Rough Opening Diameter 36 1/2... more

21 In.H-W 6.5 In.L Fiberglass Backdraft Damper, Damper Application Backdraft, ... 21 In.H-W 6.5 In.L Fiberglass Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Fiberglass, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2... more

17 In.H-W 6 In.L Aluminum Backdraft Damper Damper Application Backdraft For No... 17 In.H-W 6 In.L Aluminum Backdraft Damper Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Galvanized Steel Number of Panels 1 Maximum Air Velocity 2000 fpm Overall Height 17 in Rough Opening Diameter 14 1/2 in... more

1PACK Dayton 5NKN5 Damper Backdraft Wall Mount 22-3/4 In Sq Backdraft Damper W... 1PACK Dayton 5NKN5 Damper Backdraft Wall Mount 22-3/4 In Sq Backdraft Damper Wall Mount Supply Damper Size (In.) 20 x 20 Overall Size (In.) 22-3/4 x 22-3/4 Flange Width (In.) 1 1/2 in Max. Velocity (FPM) 2 250 Construction Material 16-gauge Extruded... more

1PACK Dayton 3HHL7 Backdraft Damper Vert/Horiz Mtg 27 3/4Sq Backdraft Exhaust ... 1PACK Dayton 3HHL7 Backdraft Damper Vert/Horiz Mtg 27 3/4Sq Backdraft Exhaust Damper No Flange Horizontal or Vertical Mount Damper Size (In.) 27-3/4 x 27-3/4 Overall Size (In.) 27-3/4 x 27-3/4 Flange Width (In.) - Max. Velocity (FPM) 2 000 Construction... more

39 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, Fo... 39 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 39 in, Rough Opening Diameter 36... more

45 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, F... 45 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 2, Maximum Air Velocity 2500 fpm, Overall Height 45 in, Rough Opening Diameter 42 1/2 in,... more

45 In.H-W 5.75 In.L Alu Wall Vent Shutter, Damper Application Backdraft, For N... 45 In.H-W 5.75 In.L Alu Wall Vent Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 2, Maximum Air Velocity 2500 fpm, Overall Height 45 in, Rough Opening Diameter 42 1/2... more

42 In.H-W 5.75 In.L Aluminum Wall Fan Shutter, Damper Application Backdraft, F... 42 In.H-W 5.75 In.L Aluminum Wall Fan Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 42 in, Rough Opening Diameter 39 1/2 in,... more

33 In.H-W 5 3/4 In.L Alu Wall Backdraft Damper, Damper Application Backdraft, ... 33 In.H-W 5 3/4 In.L Alu Wall Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 33 in, Rough Opening Diameter 30... more

38.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not ... 38.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 38 3/4 in, Rough Opening Diameter 37 in, Rough Opening Shape Square,... more

27 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, F... 27 In.H-W 5.75 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 27 in, Rough Opening Diameter 24 1/2 in,... more

17 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, Fo... 17 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 17 in, Rough Opening Diameter 14... more

57 In.H-W 6 1/4 In.L Alum Wall Fan Shutter, Damper Application Backdraft, For ... 57 In.H-W 6 1/4 In.L Alum Wall Fan Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 2, Maximum Air Velocity 2500 fpm, Overall Height 57 in, Rough Opening Diameter 54 1/2... more