Provides reliable, quiet, maintenance-free operation and is ideal for commercial applications. Shutters open automatically when the fan starts up and close when the fan stops. Features thermally-protected motor and aluminum shutters with tie bar to maximize airflow. Shipped fully assembled. Item: Shutter Mount Exhaust Fan Blade Dia.: 16" Number of Speeds: 3 Fan Voltage: 115VAC CFM @ 0.000-In. SP: 2300/2000/1800 Exhaust/Supply Fan Motor HP: 1/8 Square Opening Required: 18" Exhaust/Supply Fan Item: Exhaust Fan Hz: 60 Phase: 1 Full Load Amps: 2.0/1.8/1.6 Max. Ambient Temp.: 40 Degrees C Motor Type: Outside Rotor Motor Motor Enclosure: Totally Enclosed Motor Insulation: Class A Bearing Type: Sealed Ball Height: 20-7/8" Width: 20-7/8" Max. Depth: 9-1/2" Frame Material: Steel Frame Finish: Black Powder Coated Blade Material: Steel Guard Material: Steel Wire Guard Finish: Powder Coated Speed Control Item Number: CN5041 Number of Blades: 5 Thermal Protection: Yes Standards: ETL Includes: Aluminum Shutters, Wire Guard, Pull Chain Switch, 9 ft. Power Cord with 115V 3-Prong Plug