Steel Backdraft Damper
- Sizes 100 to 400
- Galvanized Steel Collar
- Lightweight Aluminum Damper Blade
- Spring loaded for positive closure
- Sizes 4-14
- Normally closed, power open, 24V or 120V motorized damper for round ducts.
- Control the sequencing of outside air in forced air systems.
- Motorized Damper Kits. View here.