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| Item | Backdraft Damper/Wall Shutter |
| Fits Fan Dia. | 42" |
| Mounting Hole Size | 9/32" x 1/2" |
| Opening Required | 42 1/2" x 42 1/2" |
| Overall Square | 45" |
| Type | Double Panel Gravity Operated |
| 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" | SGD 228.85 | |
|
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" | SGD 384.44 | |
|
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" | SGD 522.59 | |
 |
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" | SGD 106.18 | |
|
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" | SGD 132.48 | |
|
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" | SGD 148.47 | |
|
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" | SGD 159.19 |
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