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H| Style | Model | Flange Width | Frame Material | Material | Max. Velocity | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|
| A | 4HX72 | 1 1/2" | Aluminum , Steel | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €45.86 | |
| B | 5NKN6 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €161.14 | |
| C | 5NKN5 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €125.20 | |
| C | 5NKN4 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | €103.73 | |
| D | 4HX73 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €62.51 | |
| E | 4HX74 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €68.37 | |
| F | 4HX76 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €81.42 | |
| G | 4HX75 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €77.40 | |
| H | 4HX77 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | €85.67 |
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.