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Get it by Wednesday, Jun 4
£19.99 Flat Shipping + VAT £19.99 flat shipping is applicable on orders with an aggregate weight less than 10kg. Orders exceeding 10kg will be charged default shipping rates
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Delivery
Step 1 Add the items into your cart or submit a Purchase order
Step 2 Checkout, select NET30 payment (provide company registration and VAT number)
Step 3 Delivery via TNT or Royal Mail and receive invoice for payment in 30-days
Step 4 Make payment via BACS to our factoring partner,
| Item | Backdraft Damper |
| Air Flow Direction | Horizontal |
| Application | Backdraft |
| 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 |
| Connection Type | Not Applicable |
| Counterbalanced | Yes |
| Damper Finish | Mill Finish |
| Damper Size | 25" x 25" |
| Damper Type | Static |
| Fits Fan Dia. | 24" |
| Flange Type | Front Flange |
| Flange Width | 1 1/2" |
| For Duct Shape | Square |
| Frame Depth | 1 5/8" |
| Frame Material | Aluminum |
| Frame Material Thickness | 0.1" |
| Includes | Felted Edges For Quiet Operation |
| Max. Air Velocity | 2250 FPM |
| Max. Velocity | 2250 FPM |
| Mounting Position | Vertical |
| Opening Type | Spring |
| Overall Height | 27 3/4" |
| Overall Length | 4 1/2" |
| Overall Width | 27 3/4" |
| Rough Opening Dia. | 25 1/2" |
| Rough Opening Length | 25 1/2" |
| Rough Opening Shape | Square |
| Rough Opening Width | 25 1/2" |
| Single Acting/double Acting | Single Acting |
| Type | Supply, Wall Mount |
| Action | Single Acting |
| Airflow Direction | Horizontal, Vertical |
| Closure Velocity Rating | 2250 FPM |
| Fits Fan Diameter | 24" |
| Free Area | 3.8 sq. ft. |
| Maximum Pressure | 1 in. wc |
| Mounting Location | Wall |
| Switch Action | Normally Closed |
| Tie-rod Material | Galvanized Steel Frame and Tie Rods |
| Ship weight (kg) | 3.74 |
| Ship height (cm) | 70.49 |
| Ship length (cm) | 11.43 |
| Ship width (cm) | 70.49 |
| HS code | 7610900080 |
| Country of Origin | US |
| Model | Flange Width | Frame Material | Material | Max. Velocity | Price | |
|---|---|---|---|---|---|---|
| 4HX72 | 1 1/2" | Aluminum , Steel | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £47.74 | |
| 4HX73 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £65.06 | |
| 4HX74 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £71.16 | |
| 4HX75 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £80.56 | |
| 4HX76 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £84.74 | |
| 4HX77 | 1.375" | - | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | £89.17 | |
| 5NKN4 | 1.5" | - | 16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2250 fpm | £107.96 |
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Trade pricing is available for 
Order Value should be £500+