30 in 32.75"H-W Alu Universal Backdraft Dampr, 31 in x 31 in, Aluminum
| Item | 32.75"H-W Alu Universal Backdraft Dampr |
|---|---|
| Shutter Mounting Position | Vertical |
| Shutter Mounting Location | Wall |
| Shutter Construction Material | Extruded Aluminum Frame and G-90 Galvanized Tie Rods |
| Shutter Free Area | 4.779 sq ft |
| Shutter Opening Required | 31 in x 31 in |
| Shutter Overall Size | 32-3/4 in x 32-3/4 in |
| Fits Fan Dia. | 30 in |
| Blade Material | Aluminum |
| Max. Velocity | 2250 FPM |
| Type | Gravity Operated, Single Panel |
| Open Depth | 6 in |
| Number of Panels | 1 |
| Shutter Overall Square | 23" |
| Mounting Hole Size | Prepunched |
| Frame Opening B | 30 in |
| Flange Width | 1-3/8 in |
| Frame Opening A | 30 in |
| Shutter Item | Backdraft Damper / Intake Shutter |
| For Use With | Vertical Mounted Supply Fans |
| Frame Depth | 1-5/8 in |
| Mounting Position | Vertical, Horizontal |
| Free Area | 4.8 sq ft |
| Rough Opening Length | 31 in |
| Single Acting/Double Acting | Single Acting |
| Tie-Rod Material | Tie Rods, Galvanized Steel Frame |
| Flange Type | Front Flange |
| Rough Opening Width | 31 in |
| Airflow Direction | Horizontal |
| Fits Fan Diameter | 30 in |
| Mounting Hole Diameter | 1/4 in |
| Mounting Style | Flush Mount |
| Damper Finish | Baked Enamel |
| Blade Seal Material | Felt |
| Blade Material Thickness | 26 ga |
| Counterbalanced | Yes |
| Overall Height | 32-3/4 in |
| Switch Action | Normally Closed |
| Frame Material | Aluminum |
| Color | White |
| Bushing Material | Stainless Steel |
| Rough Opening Shape | Square |
| Frame Material Thickness | 0.1 ga |
| Closure Type | Spring |
| Maximum Pressure | 1 in wc |
| Opening Type | Spring |
| Maximum Air Velocity | 2,250 fpm |
| Overall Width | 32-3/4 in |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |