Features:ulliPrecision spot ventilation fan, ideal for residential construction (single and multifamily) and manufactured homes/liliRevolutionary ECM motor with SmartFlow™ technology for optimum CFM output/liliPick-A-Flow™ Speed Selector – one fan, you choose the CFM (501, 80 or 100 CFM)/liliOptional built-in Multi-Speed Control for ASHRAE 62.2 compliance/liliOptional built-in Condensation Sensor to control moisture in the bathroom/liliLighted models incorporate one 10W dimmable LED chip panel with 1W LED night light for warm, energy efficient illumination (night light must be wired separately)li3-3/8” Housing Depth – lowest profile ENERGY STAR® fan available – fits anywhere!/liliUnique L-Shaped bracket simplifies installation and provides strong support/liliUL approved for ceiling or wall mount (actually fits in a 2 x 4 stud wall)/liliWall Installation reduces cost by eliminating the need to incorporate a radiation damper when penetrating fire rated ceilings, making it ideal for Multi-Family applicationsliCan be used to comply with ASHRAE 62.2, LEED, IAP, California Title 24, CALGreen and WA Ventilation Code/li/ul