Usage Tips:Durable mesh design - panel, moisture resistant and rustproof. Blades, strong wind pressure and high efficiency. Hollow design on the back, good heat dissipation effect, fast speed, extremely quiet. The fan shell is made of durable lacquered material. The protective thick dense mesh design can not only prevent dirt from entering the motor blades, but also prevent accidental contact and injury. Efficient ventilation - 2800 rpm, high speed and stable operation, temperature resistance and corrosion resistance, longer service life. Removable design is convenient for cleaning fragments, dirt or oil stains regularly to increase service life. Easy installation with screws. Check Valve - The exhaust fan's check valve can let contaminated air out of the room, but prevents contaminated air from returning to the room. Automatically close the valve to prevent oil vapors from flowing back and other foreign objects from entering. Removable Design - Removable design is convenient for cleaning fragments or greasy dirt regularly to increase service life. Wide application scope - This wall-mounted ceiling fan can be used in areas that require continuous or regular ventilation, such as bathroom, living room, bedroom, kitchen, office, etc., and can be used in indoor exhaust gas, humidity, steam, etc. smoke. Suitable for wall or ceiling installation.