Backdraft dampers with galvanized steel collar and lightweight aluminum damper blades. Spring loaded for positive closure against interior gasket.
- 6" spring loaded back draft damper
- Galvanized steel collar
- Aluminum damper blades
- For 6" duck
- Easy installation
- 6" spring loaded back draft damper
- Galvanized steel collar
- Aluminum damper blades
- For 6" duck
- Easy installation