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Step 3 Delivery via TNT or Royal Mail and receive invoice for payment in 30-days
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| Item | Backdraft Damper/Wall Shutter |
| Air Flow Direction | Horizontal |
| Blade Material | Aluminum |
| Blade Material Thickness | 26 ga. |
| Blade Orientation | Parallel Blades |
| Blade Seal Material | Felt |
| Blade Type | Flat Blade |
| Bushing Material | Stainless Steel |
| Closure Type | Gravity |
| Counterbalanced | Yes |
| Damper Application | Backdraft |
| Damper Finish | Mill Finish |
| Damper Type | Static |
| Fits Fan Dia. | 42" |
| Flange Type | Rear Flange |
| Flange Width | 1 1/2" |
| For Use With | Vertical Mounted Exhaust Fans |
| Frame Depth | 2 1/2" |
| Frame Less Flange | 42 |
| Frame Material Thickness | 20 ga. |
| Frame Opening A | 42" |
| Frame Opening B | 42" |
| Frame Opening Height | 42" |
| Frame Opening Width | 42" |
| Includes | Prepunched Mounting Holes |
| Max. Velocity | 2500 FPM |
| Maximum Air Velocity | 2500 FPM |
| Mounting Hole Di. | 1/4" |
| Mounting Hole Size | 9/32" x 1/2" |
| Mounting Position | Vertical |
| Number Of Panels | 2 |
| Open Depth | 6 1/4" |
| Opening Required | 42 1/2" x 42 1/2" |
| Opening Type | Gravity |
| Overall Dia. | 45" |
| Overall Height | 45" |
| Overall Length | 5 3/4" |
| Overall Square | 45" |
| Overall Width | 45" |
| Rough Opening Diameter | 42 1/2" |
| Rough Opening Length | 42 1/2" |
| Rough Opening Shape | Square |
| Rough Opening Width | 42 1/2" |
| Shutter Mounting Location | Wall |
| Shutter Mounting Position | Vertical |
| Shutter Opening Required | 42 1/2" x 42 1/2" |
| Shutter Overall Size | 45" x 45" |
| Single Acting/double Acting | Single Acting |
| Type | Double Panel Gravity Operated |
| Action | Single Acting |
| Airflow Direction | Horizontal |
| Closure Velocity Rating | 2500 FPM |
| Fits Fan Diameter | 42" |
| Frame Material | Galvanized Steel |
| Free Area | 10.3 sq. ft. |
| Maximum Pressure | 1 in. wc |
| Mounting Hole Diameter | 1/4" |
| Mounting Location | Wall |
| Overall Diameter | 45" |
| Switch Action | Normally Closed |
| Tie-rod Material | Galvanized Steel Frame and Tie Rods |
| Ship weight (kg) | 12.6 |
| Ship height (cm) | 114.3 |
| Ship length (cm) | 14.61 |
| Ship width (cm) | 114.3 |
| HS code | 8414901080 |
| Country of Origin | US |
A. Backdraft dampers are used in ventilation systems to deliver airflow in one direction while preventing airflow in the opposite direction.
A. Mill finished aluminium blades provide excellent strength to weight ratio and corrosion resistance on exposed surfaces.
| Product | Model | Blade Material | Frame Depth | Free Area | Item | Length | Material | Max. Velocity | Mounting Hole Size | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
 |
1C055 | Mill Finish Aluminum | 3" | 5.452 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £150.82 | |
|
1C209 | Mill Finish Aluminum | 3" | 7.071 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £253.34 | |
|
1C211 | Mill Finish Aluminum | 3" | 12.924 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £344.39 | |
 |
1C742 | Mill Finish Aluminum | 2-1/2" | 0.786 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £69.97 | |
|
1C743 | Mill Finish Aluminum | 2-1/2" | 1.436 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £87.30 | |
|
1C744 | Mill Finish Aluminum | 2-1/2" | 2.043 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £97.84 | |
|
1C745 | Mill Finish Aluminum | 2-1/2" | 2.281 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £104.92 |
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Trade pricing is available for 
Order Value should be £500+