Housing dimension please note the panel size is 11.9 x 11.9 inches/ 30.2 x 30.2 cm (L x W), install size is 10.43 x 10.43 inches/ 26.5 x 26.5 cm (L x W), duct diameter is 4.0 inches/ 10 cm, resizing your existing ceiling opening will be needed if your current fan housing is smaller; Tip the product is directly fixed to the dropping ceiling by our metal screws; Please use the accessories we provide; Please confirm the size before purchase

ETL Certification fan is stable and long lasting, and can reduce air leakage by up to a half, achieving nice home performance through blower door tests and decreasing cold and warm air backdrafts

Integrated Fan with Color Changing LED Lighting 15W night light and effective fan components with permanently lubricated motors can be combined or individually wired to wall switches, the ceiling light emit selectable, you can preset your preferred light color temperature soft white, bright white or daylight (3000K/4000K/6000K); These combination will help you find your way through the room in the dark

[Household ventilation fans]quiet, energy-efficient exhaust fan and light combo 110 CFM and 1.0 Sones, 110V 45W(with 15W LED Light), 50/ 60 Hz to help control air quality, reduce moisture, odors, powerful enough for rooms (including bathroom) up to 105 sq. ft. for your convenience; Recommended for professional bathroom installation

Simple Installation you can use the new or replace the existing ventilation with the retrofit one, and can be completed entirely from the room side, no need for attic access