Backdraft Dampers
| PRL |  |
Extruded Aluminum Construction, Single Thickness Blades, Automatic Operation Backdraft Damper |
|---|---|---|
| PR55 | Aluminum Frame, Single Thickness Aluminum Blade, Backdraft Damper | |
| PR66 | Steel Frame, Single Thickness Steel Blade, Backdraft Damper | |
| PRI4 | Galvanized Steel Frame, Steel Tear Drop Design Blade, Backdraft Damper | |
| PRI9 | Galvanized Steel Frame, Steel Tear Drop Design Blade, Backdraft Damper |
