Universal Backdraft Damper Duct - Range Hood Kitchen Draft Stopper - Backflow Preventer - Vent Deflector - Exhaust Fan Check Valve Anti Odor Control Valve Flue Smoke Control 15/16/18cm

• ※※ Efficient exhaust air flow prevention tool: This air-regulating return air retarder is designed to improve ventilation by releasing polluted air from the automatically closing damper to prevent outdoor air from returning.
• ※※ ABS material air volume adjustment vent connector: the anti-wind air damper is composed of durable materials that do not corrode or rust, and has lightweight damper blades designed to open outwards by air pressure and close under the action of gravity.
• ※※ No pressure setting: This leeward damper prevents wind from returning. The circular duct connector of the leeward damper can be easily installed vertically or horizontally.
• ※※ Wide range of uses: these dampers can be widely used in air conditioners, dryers, exhaust fans, range hoods, range hoods, heating pipes and vents.
• ※※ Suitable for exhaust ducts with diameters of 150/160/180 mm.

Specification: Material: ABS Applicable size: 150mm/160mm/180mm Package list: 1x check valve 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 Enter your home through the dryer vent. This kind of anti-wind shutters can be used as part of a long duct for various purposes, including ventilation of the whole house, passive chimney exhaust, air conditioning, positive pressure, tumble dryer ventilation, HVAC and heat recycling system. 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.