Galvanized Steel Ventilation Damper. Manual handle to regulate the damper opening-closing sensitivity.
Chimney Pipe Throttle Flue Liner Damper Ventilation Non Return Valve Shutter
Chimney Pipe Throttle Flue Liner Damper Tube Non Return Valve Shutter Blade
Chimney Pipe Throttle Flue Liner Damper Tube / Non Return Valve Shutter Blade
Stainless Steel Fireplace Damper Ventilation Non Return Valve Flue Liner Shutter
Metal Throttle Valve Flue Liner Air Damper Tube Non Return Valve Shutter Blade
