Feature: 1. EFFICIENT VENTILATION Bathroom extractor ventilation fan is equipped with efficient double ball bearing motors, thickened impellers and 7 blades, quickly and quietly removes exhaust and ventilation. 2. DOUBLE BALL BEARING MOTORS Through wall fan features a dual ball bearing brushless external motor to ensure efficient silent operating and premium performance. Reduce friction coefficient and save electricity. 3. DETACHABLE DESIGN Bathroom exhaust fan has a detachable design, the motor can be removed by unscrewing the four corner screws. It is convenient to regularly clean up debris or oil and increase the service life. 4. EASY TO INSTALL Wall mounted ceiling extractor ventilation fan is suitable for wall or ceiling installation. It is recommended to fix the exhaust fan with screws. 7.9 to 8.7in recommended opening. 5. WIDE USE Exhaust fan can be used to create efficient indoor systems between workshops, basements, warehouses, apartments, kitchens, bathrooms and other areas that require continuous or regular ventilation. Specification: Item Type: Bathroom Exhaust Fan Material: 410 Stainless Steel Product Size: Approx. Size: Approx. 250x250mm / 9.8x9.8in Weight: Approx. 2177g / 76.7oz Applicable Places: Kitchen, Bathroom, Garage Frequency: 50Hz Flow: 850m³/h Power: 52W Rated Speed: 2600r/min Recommended Opening: 200-220mm / 7.9-8.7in . Package List: 1 x Bathroom Exhaust Fan Note: Please allow some errors due to manual measurement.