Universal Non-Return Duct Valve Connector (5 / 125mm) - Ideal for Air Conditioners / Cooker Hoods Brand new, premium quality universal round duct valve connector, featuring inline back draught shutter / gravity damper flap. This connector will fit inside 5 / 125mm round pipes or 127mm flexible vent hoses and can be used to join multiple lengths of pipe together to extend ducting. Stops smells and prevents cold air coming through your extractor fan or ducting. Compatible with ventilation applications such as air conditioners, cooker hoods, bathroom or kitchen extractor fans, hydroponics fans and in-line extract fans. Specifications: Diameter: 5 / 125mm Width: 62mm Weighted off-centre hinge blocks external air - keeping connector in closed position Internal air opens flap whilst flow is active and returns to closed when inactive Free Area: 11,500mm² Max / Min temperature: 60°C / - 15°C Material: High Impact Plastic Colour: White Fits Models: UNIVERSAL Ideal for use with the vast