TAKE A LOOK AT THIS:150-180MM Bathroom Check Valves Rest Room Pipe Ventilator Air Valve kitchen Plumbing Exhaust Outlet Home Improvement rest roomPRODUCT PROPERTY:✨ 1: Product original from cn(origin).✨ 2: The structure of our product is shutoff.REASONS TO BUY:✨ Ventilation check valve: the shower door valve has a built-in ventilation check valve, which can help you get out of the way when the air is flowing, and make your room more ventilated. ✨ Exhaust outlet: the exhaust outlet can be used in conjunction with the existing air intake nozzle, which greatly improves the air quality of the kitchen and bathroom. ✨ Pipe ventilator: the pipe venting system is designed to improve air circulation and reduces condensation on the internal surface of the room. it can also be used as a replacement for your old or broken one. ✨ Quality assured: if you have any questions about our products, please feel free to contact us. we will provide you with the best service. ✨ Easy install: the bathroom check valve is easy to install and remove, just insert the nozzle into the exhaust hole of the air outlet, and then tighten the screw. ✨ Spare parts: the exhaust outlet valve is made of high-quality aluminum alloy material, which is durable and has a long service life. RELATED INFO:✨ Exhaust check valve: the built-in check valve makes exhaust and air inflate quickly & effectively. when the internal pressure is completed, it can be used normally. ✨ Air check valve: the bathroom check valve is designed by a professional check valve manufacturer, which acts as an air check valve for air circulation and ensures that the seal is complete.