【Stable & Durable Exhaust Fan】: The ventilation fan is made of high-quality metal materials, with a bright surface, anti-corrosion, anti-scratch and prevent inhalation of foreign objects. Compared with other competitors’ products, it can withstand moisture and high temperature, provide a stable working environment for the ventilation fan, and longer life of the ventilation fan. 【EFFICIENT VENTILATION FAN】 – Adopts double ball bearing outer rotor brush-less motor to ensure high efficient, quiet operation and high-quality performance. Compared with ordinary motors, the upgraded motor can reduce friction coefficient, save electricity effectively and enlarge the service life of the machine. 【EASY TO INSTALL】- Suitable for wall or ceiling installation. The exhaust fan is recommended to fix with glue or screws.Convenient to clean, you can remove the motor by unscrewing the four-corner screws. The detachable design is convenient for cleaning up fragment or greasy dirt regularly for increasing service life.