TPI Corporation CE-18-D Direct Drive Exhaust Fan, Guard Mounted, Single Phase, 18" Diameter, 120 Volt Guard mounted 3-speed exhaust fan for use in exterior ventilation 2.2 amp, 120V, single phase, 1/8 hp, permanently lubricated, totally enclosed ball bearing motor with permanent split capacitor Can be used with or without external shutter (not included) Three aluminum paddle blades attached to a steel hub and spider assembly for durability Junction box included for direct wiring to wall switch