Equipped with a backdraft damper for backflow prevention. Connector fits into round pipe ducting to connect two lengths together in a straight line.
Metal Back Draught Shutter Damper Non Return Valve Vent Extractor Fan Ducting UK
Metal Back Draught Shutter Damper, Spring Loaded Non Return Valve Backdraft Duct
4" 100mm 5" 125mm 6" 150mm in-line extractor fan back draught shutter Manrose
INLINE BACK DRAUGHT SHUTTER EXTRACTOR FAN DUCTING 414CD, 515CD, 616CD 4", 5" 6"
4" 5" 6" Wall Plate With Spigots Connector Back Draught Shutter For Ducting
4" 100mm, 5" 125mm, 6" 150mm in-line extractor fan vent back draught shutter
