Wall Backdraft Damper, Vertical Mount, 20 in Dia Fan, 25 in H x 25 in W x 6-1/4 in D, 2000 fpm
| Item | 25"H-W 6"L Aluminum Backdraft Damper |
|---|---|
| Shutter Mounting Position | Vertical |
| Shutter Mounting Location | Wall |
| Shutter Construction Material | G-90 Galvanized Steel Frame and Tie Rods |
| Shutter Free Area | 2.527 sq ft |
| Shutter Opening Required | 22-1/2 in x 22-1/2 in |
| Shutter Overall Size | 25 in x 25 in |
| Fits Fan Dia. | 20 in |
| Blade Material | Aluminum |
| Max. Velocity | 2500 FPM |
| Type | Exhaust |
| Width | 25 in |
| Number of Panels | 1 |
| Frame Depth | 2-1/4 in |
| Flange Width | 1-1/2 in |
| Shutter Item | Backdraft Damper / Wall Shutter |
| For Use With | Vertical Mounted Exhaust Fans |
| Frame Opening A | 22 in |
| Open Depth | 6-1/4 in |
| Frame Opening B | 22 in |
| Mounting Hole Size | 9/64 in |
| Length | 25 in |
| Includes | Felted Louvers for Quiet Operation |
| Mounting Position | Vertical |
| Airflow Direction | Horizontal |
| Overall Width | 25 in |
| Damper Application | Backdraft |
| Frame Less Flange | 22 |
| Rough Opening Shape | Square |
| Counterbalanced | No |
| Maximum Pressure | 1 in wc |
| Overall Height | 25 in |
| Closure Velocity Rating | 2,000 fpm |
| Fusible Link Temperature | Not Applicable |
| Bushing Material | Nylon; Stainless Steel |
| Mounting Hole Diameter | 1/4 in |
| Series | 502 |
| Maximum Ambient Temperature | 180 Degrees F |
| Pressure Drop @ 1000 fpm (AMCA 5.2) | Not Applicable |
| Overall Length | 6 in |
| Connection Type | Not Applicable |
| Rough Opening Diameter | 22-1/2 in |
| Single Acting/Double Acting | Single Acting |
| For Nominal Duct Diameter | Not Applicable |
| Rough Opening Length | 22-1/2 in |
| ACMA Leakage Class | Not Applicable |
| Frame Material Thickness | 20 ga |
| Switch Action | Normally Closed |
| Fits Fan Diameter | 20 in |
| Tie-Rod Material | Tie Rods, Galvanized Steel Frame |
| Closure Type | Gravity |
| Blade Type | Flat Blade |
| For Duct Shape | Not Applicable |
| Free Area | 2.5 sq ft |
| Opening Type | Gravity |
| Blade Orientation | Parallel Blades |
| Rough Opening Width | 22-1/2 in |
| Damper Type | Static |
| Frame Material | Galvanized Steel |
| Overall Diameter | 25 in |
| For Fuel Type | Not Applicable |
| Blade Material Thickness | 26 ga |
| Flange Type | Rear Flange |
| Blade Seal Material | Felt |
| Seal Material | Not Applicable |
| Maximum Air Velocity | 2,000 fpm |
| Damper Finish | Mill Finish |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |