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| Item | Backdraft Damper/Wall Shutter |
| Blade Material | Mill Finish Aluminum |
| Fits Fan Dia. (In.) | 20 |
| Flange Width | 1.5" |
| Frame Depth | 2-1/2" |
| Free Area | 2.281 Square-Ft. |
| Material | G-90 Galvanized Steel Frame and Tie Rods |
| Max. Velocity | 2500 fpm |
| Mounting Hole Size | 9/32 x 1/2" |
| Mounting Position | Vertical |
| Number of Panels | 1 |
| Open Depth (In.) | 5-3/4 |
| Opening Required | 20-1/2 x 20-1/2" |
| Overall Square (In.) | 23 |
| Type | Gravity Operated, Single Panel |
| UPC | 190735131732 |
| Ship weight (kg) | 3.85 |
| Ship height (cm) | 61.21 |
| Ship length (cm) | 59.69 |
| Ship width (cm) | 8.64 |
| HS code | 8414901080 |
| Country of Origin | US |
| Product | Model | Mounting Hole Size | Blade Material | Frame Depth | Mounting Position | Opening Required | Type | Width | Free Area | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
1C055 | 9/32 x 1/2" | Mill Finish Aluminum | 3" | Vertical | 30-1/2 x 30-1/2" | Gravity Operated, Single Panel | - | 5.452 Square-Ft. | SGD 257.46 | |
 |
1C209 | 9/32 x 1/2" | Mill Finish Aluminum | 3" | Vertical | 36-1/2 x 36-1/2" | Gravity Operated, Double Panel | - | 7.071 Square-Ft. | SGD 432.49 | |
|
1C210 | 9/32 x 1/2" | Mill Finish Aluminum | 3" | Vertical | 42-1/2 x 42-1/2" | Gravity Operated, Double Panel | - | 10.253 Square-Ft. | SGD 504.16 | |
|
1C211 | 9/32 x 1/2" | Mill Finish Aluminum | 3" | Vertical | 48-1/2 x 48-1/2" | Gravity Operated, Double Panel | - | 12.924 Square-Ft. | SGD 587.91 | |
 |
1C742 | 9/32 x 1/2" | Mill Finish Aluminum | 2-1/2" | Vertical | 12-1/2 x 12-1/2" | Gravity Operated, Single Panel | - | 0.786 Square-Ft. | SGD 120.68 | |
|
1C743 | 9/32 x 1/2" | Mill Finish Aluminum | 2-1/2" | Vertical | 16-1/2 x 16-1/2" | Gravity Operated, Single Panel | - | 1.436 Square-Ft. | SGD 149.04 | |
|
1C744 | 9/32 x 1/2" | Mill Finish Aluminum | 2-1/2" | Vertical | 18-1/2 x 18-1/2" | Gravity Operated, Single Panel | - | 2.043 Square-Ft. | SGD 167.03 |
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