PVC Ducting Pipe Non Return Valve Round Plastic Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper for House Bathroom Kitchen Non Return Valve

Specification: Size: as shown Material: PVC Features: It is very suitable for conveying exhaust fans in bathrooms or kitchens, hydroponics, direct exhaust fans or range hoods. Use our built-in dryer vents and wind plugs to prevent cold air from passing through the dryer Vent into your home. This kind of reverse wind shutters can be used as part of a long duct for various purposes, including ventilation of the entire house, passive chimney exhaust, air conditioning, positive pressure, tumble dryer ventilation, HVAC and heat recovery systems. 1, Please allow 1-5MM error due to manual measurement. 2. Due to the difference between light and screen, the color of the item may be slightly different from the picture. ⑤Package list: 1x Pipeline air volume adjustment check valve