12 Volt motor requires only 1.5 Amps. Installs in 6-1/4" diameter rough opening. Efficient Centrifugal Blower Wheel assures quiet ventilation. Achieves 100 CFM. Easy one-hand opening/closing. Low profile smoke dome requires only 2-3/8" clearance in closed position, 3-1/4" clearance in open position. Screen frame, handle and garnish in matching Polar White.. Ceiling garnish included. Ceiling extension ring sold separately. Also See Parts Illustration.