Bathroom Exhaust Fan, 8 inch Silent Bathroom Ceiling Ventilation Fan with Anti-Backflow Check Valve, Balanced Air Solution, for Tub Shower Enclosure, 110V$$Tools & Hardware Other

Effectively control air quality in the bathroom, remove moisture and reduce sweltering heat. suitable for the bathroom, laundry room, office, and so on Quick-start new or replace existing ventilation, can be installed on the ceiling and wall (a ventilation pipe is required). Brown: hot wire, Blue: neutral wire, Yellow with green: grounding wire Made of ABS plastic with a long service life, built-in copper motor with thermal protection, baffle design prevent from back flowing 9.8 x 9.8 inches/ 25 x 25 cm (L x W), Mounting Hole Size: 8.07 x 8.07 Inches/ 20.5 x 20.5 cm (L x W), Duct Diameter: Ø4.0 inches/ Ø10 cm. Confirm the size before purchasing, and the product is directly fixed to the dropping ceiling by screws