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Get it by Tuesday, Jun 10
£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
Payment
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 |
| 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. | 20" |
| Flange Type | Rear Flange |
| Flange Width | 1 1/2" |
| For Use With | Vertical Mounted Exhaust Fans |
| Frame Depth | 2 1/2" |
| Frame Less Flange | 22 |
| Frame Material Thickness | 20 ga. |
| Frame Opening A | 22" |
| Frame Opening B | 22" |
| Frame Opening Height | 24" |
| Includes | Prepunched Mounting Holes |
| Length | 25" |
| Max. Velocity | 2500 FPM |
| Maximum Air Velocity | 2500 FPM |
| Mounting Hole Di. | 1/4" |
| Mounting Hole Size | 9/64" |
| Mounting Position | Vertical |
| Number Of Panels | 1 |
| Open Depth | 5 3/4" |
| Opening Type | Gravity |
| Overall Dia. | 25" |
| Overall Height | 25" |
| Overall Length | 5 3/4" |
| Overall Width | 25" |
| Rough Opening Diameter | 22 1/2" |
| Rough Opening Length | 22 1/2" |
| Rough Opening Shape | Square |
| Rough Opening Width | 22 1/2" |
| Shutter Mounting Location | Wall |
| Shutter Mounting Position | Vertical |
| Shutter Opening Required | 22 1/2" x 22 1/2" |
| Shutter Overall Size | 25" x 25" |
| Single Acting/double Acting | Single Acting |
| Width | 25" |
| Action | Single Acting |
| Airflow Direction | Horizontal |
| Closure Velocity Rating | 2500 FPM |
| Fits Fan Diameter | 20" |
| Frame Material | Galvanized Steel |
| Free Area | 2.5 sq. ft. |
| Maximum Pressure | 1 in. wc |
| Mounting Hole Diameter | 1/4" |
| Mounting Location | Wall |
| Overall Diameter | 25" |
| Switch Action | Normally Closed |
| Tie-rod Material | Galvanized Steel Frame and Tie Rods |
| Ship weight (kg) | 4.01 |
| Ship height (cm) | 63.5 |
| Ship length (cm) | 14.61 |
| Ship width (cm) | 63.5 |
| Country of Origin | US |
| Product | Model | Flange Width | Material | Max. Velocity | Type | Price | |
|---|---|---|---|---|---|---|---|
 |
3TZ50 | 1" | G-90 Galvanized Steel Frame, Aluminum Blades, Stainless Steel Pivot Pins, Nylon Bushings and Galvanized Steel Tie Rods. | 2000 fpm | Roof Mount, Exhaust | £50.27 | |
 |
4HX33 | 1.375" | 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware | 2000 fpm | Wall Mount, Supply | £64.56 | |
|
4HX71 | 1" | G-90 Galvanized Steel Frame, Aluminum Blades, Stainless Steel Pivot Pins, Nylon Bushings and Galvanized Steel Tie Rods. | 2250 fpm | Roof Mount, Exhaust | £292.44 | |
 |
60P625 | - | - | - | - | £790.84 | |
|
50K327 | - | - | - | - | £723.46 | |
|
50K329 | - | - | - | - | £348.10 | |
|
50K332 | - | - | - | - | £996.89 |
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
Trade pricing is available for 
Order Value should be £500+