DAYTON Damper Backdrafts
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Blade Material: Aluminum , Blade Material Thickness: 26 ga. , Blade Orientation: Parallel Blades , Blade Seal Material: Felt , Blade Type: Flat Blade , Fits Fan Diameter: 8" , For Duct Shape: Square , Frame Depth: 1 5/8" , Frame Finish: Galvanized , Free Area: 0.3 sq. ft. , Max. Air Velocity: 2250 fpm , Max. Ambient Temp.: 180 Deg. F , Max. Pressure: 1" wc , Mounting Location: Wall , Mounting Position: Vertical , Overall Height: 10 3/4" , Overall Length: 4 1/2" , Overall Width: 10 3/4" , Rough Opening Diameter: 8 1/2" , Rough Opening Length: 7 1/2" , Rough Opening Shape: Square , Switch Action: Normally Closed , Tie-Rod Finish: Galvanized , Tie-Rod Material: Steel , Type: Wall Mount, Supply
Style | Model | Flange Width | Frame Material | Material | Max. Velocity | Price | |
---|---|---|---|---|---|---|---|
A | 4HX72 | 1 1/2" | Aluminum , Steel | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €56.63 | |
A | 5NKN4 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €127.22 | |
A | 5NKN5 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €154.52 | |
A | 5NKN6 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €197.62 | |
B | 4HX73 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €77.21 | |
A | 4HX76 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €100.10 | |
A | 4HX74 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €84.35 | |
A | 4HX75 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €95.43 | |
A | 4HX77 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €105.39 |
Damper Backdrafts
Dayton damper backdrafts are suitable for use in ductwork, roof curbs or wall collars when using a fan or power roof ventilator. The blades of these dampers are provided with a felt seal on the leading edge for superior protection from the weather and are spring supported to permit blades to open comfortably. Choose from a range of these damper backdrafts, available in 1.375 and 1.5-inch widths.
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