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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. | 18" |
| Flange Type | Rear Flange |
| Flange Width | 1 1/2" |
| For Use With | Vertical Mounted Exhaust Fans |
| Frame Depth | 2 1/2" |
| Frame Less Flange | 18 |
| Frame Material Thickness | 20 ga. |
| Frame Opening A | 18" |
| Frame Opening B | 18" |
| Frame Opening Height | 18" |
| Frame Opening Width | 18" |
| 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 | 1 |
| Open Depth | 5 3/4" |
| Opening Required | 18 1/2" x 18 1/2" |
| Opening Type | Gravity |
| Overall Dia. | 21" |
| Overall Height | 21" |
| Overall Length | 5 3/4" |
| Overall Square | 21" |
| Overall Width | 21" |
| Rough Opening Diameter | 18 1/2" |
| Rough Opening Length | 18 1/2" |
| Rough Opening Shape | Square |
| Rough Opening Width | 18 1/2" |
| Shutter Mounting Location | Wall |
| Shutter Mounting Position | Vertical |
| Shutter Opening Required | 18 1/2" x 18 1/2" |
| Shutter Overall Size | 21" x 21" |
| Single Acting/double Acting | Single Acting |
| Type | Gravity Operated Single Panel |
| Action | Single Acting |
| Airflow Direction | Horizontal |
| Closure Velocity Rating | 2500 FPM |
| fits fan diameter | 18" |
| frame material | Galvanized Steel |
| free area | 2 sq. ft. |
| maximum pressure | 1 in. wc |
| mounting hole diameter | 1/4" |
| mounting location | Wall |
| overall diameter | 21" |
| switch action | Normally Closed |
| tie-rod material | Galvanized Steel Frame and Tie Rods |
| Ship weight (kg) | 3.33 |
| Ship height (cm) | 53.34 |
| Ship length (cm) | 14.61 |
| Ship width (cm) | 53.34 |
| HS code | 8414901080 |
| Country of Origin | US |
| 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 | |
|
1C210 | Mill Finish Aluminum | 3" | 10.253 Square-Ft. | Backdraft Damper/Wall Shutter | - | G-90 Galvanized Steel Frame and Tie Rods | 2500 fpm | 9/32 x 1/2" | £290.44 | |
|
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 | |
|
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+