This Canarm Wall Exhaust Fan is an efficient, easy-to-install, low-maintenance solution for keeping room air fresh. Dimensions L x H (in.): 29 1/4 x 29 1/4, Dimensions L x W x H (in.): 29 1/4 x 16 x 29 1/4, Fan Diameter (in.): 24, Air Delivery (CFM): 5,050, Speed (RPM): 1,100, Speeds (qty.): Variable, Amps: 6.4/3.2, Volts: 115/230, HP: 1/3, Needs to be Hardwired: Yes