Direct connection with the duct. Galvanized steel case and rotary gravity-actuated blade.
Chimney Pipe Throttle Flue Liner Damper Tube Non Return Valve Shutter Blade
Chimney Pipe Throttle Flue Liner Damper Tube / Non Return Valve Shutter Blade
Metal Chimney Pipe Rotary Blade Duct Tube Damper Non-Return Valve Flue Liner
Chimney Pipe Damper / Non-Return Valve Flue Liner Throttle Tubing Shutter D
Chimney Pipe Throttle Flue Liner Damper Ventilation Non Return Valve Shutter
