80-180mm Pipe Exhaust Fan Check Valve Air Valve Pipe Outlet Exhaust Fan Backdraft Damper Bathroom Kitchen Accessories Features: *High temperature resistant materials: This check valve is made of high temperature resistant materials, ensuring its durability and longevity even in high heat environments. *Anti oil sticking: The sealing ring design of this check valve reduces contact area and viscosity, avoiding oil from sticking and ensuring smooth . *: The main body of this check valve is made of high-quality ABS material, which provides strong aging resistance and ensures its durability over time. *Anti fly: The check valve is usually closed, effectively avoiding fly from entering and ensuring a clean and hygienic environment. *Prevention: Equipped with a silicone sealing gasket, this check valve has a very strong sealing effect, effectively avoiding smell leakage and providing a pleasant atmosphere. Specifications: *Product Name:Indoor ventilation pipe kitchen air valve entrance and exit pipe fittings 80-180mm *Material:plastic *Size:80-100-120mm150-160-180mm *Color:white Package Content: 1 XCheck valve Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.