Tech Drive Super Quiet 110 CFM, 1.5 Sone Bathroom Ventilation and Exhaust Fan with Humidity Sensor, No Attic access Needed Installation, Ceiling Mounted Fan,White

Very quiet bathroom fan (1.5 sones) and Strong air movement (110CFM) for bathroom up to 110 Sq. Ft. Recommened for use in large room Two installation options:1. For New Construction: It can attaching the fan housing mounts to the ceiling joists,if spacing between is 12in. ( if spacing between16 in.- 24 in, It can using suspension brackets.Mounting bracket included ) 2. For Existing Construction : With No attic access installation and replaces most existing bathroom fans. it can be done entirely from the room-ceiling side - no attic access needed installation Two operation options: 1. Manual mode-The RED LED indicator lights, the fan will run continuously in this mode. 2. Humidity sensing mode- The LED indicator light will be green. In this mode the fan will automatically turn on when the humidity level in the room is above 60% Energy Star qualified, UL and HVI certified for performance assurance.Acceptable for use over a bathtub or shower when installed in a GFCI-protected branch circuit. Low profile white grill cover,Housing size: 9in x 8.5in x 6in with 4in duct. ceiling mounting Opening: 9.25in x 8.9in.Efficient and quiet,excellent motor perfomance, working at least 25000 hours, Weight: 8.45031850246 Pounds, Manufacturer: XIANGYU ELECTRICAL APPLIANCES LIMITED