Features: Make from plastic, offering durability and heat resistance. Can be Perfectly used for indoor exhausting, lower noise, and it also could be used as a role of decorating. Very easy to install with the installed casing, and the cover could be adjusted according to your demand, flexible and convenient. Grille design, our bathroom exhaust fan cover guarantees 360-degree even air inlet distribution. The exhaust fan cover fit square ceiling or wall-mounted exhaust fan, bathroom fan, and ventilation fan, also serving as air diffuser. Specifications: Materials: Plastic Styles: Number 4/Number 5/Number 6/Number 7/Number 8 Number 4 Side length: about 24.50cm/9.65inch Number 5 side length: about 24.50cm/9.65inch Number 6 side length: about 31cm/12.2inch Number 7 side length: about 31cm/12.2inch Number 8 side length: about 34cm/13.39inch Package Includes: 1Pc Bathroom Exhaust Fan Cover note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.