Basic Function: The round airflow ventilation pipe covers can be perfectly used for indoor air exhaust, reduce noise, and can also be used as decoration. High Quality: Our ventilation duct cover is made of high quality ABS material, environmentally friendly, safe, sturdy and durable to use. Good materials can increase the service life of the product. Easy to Install: The airflow diffuser can be perfectly installed on the ceiling or wall, also very easy to disassemble for convenient cleaning. Size: 14.8*9.5*8 cm Adjustable: The round ceiling diffuser is very easy to install with the housing installed, and the cover can be adjusted according to your demand, flexible and convenient. Simple design, fashionable appearance.