Shutter mounted exhaust fans are widely used for ventilating warehouses, stores, factories, workshops, greenhouses and farm buildings. Shutter frames with prepunched mounting holes allow for easy installation. All ventilators are UL 705 Standards listed Heavy duty guards have gray polyester coating to resist corrosion OSHA compliant guards Totally enclosed motors Shipped ready to install Blades are manufactured from galvanized steel AMCA Air Certified, cULus Listed Specifications Model Number: 2SHE36D1 Art Number: 47105 Dimensions: 39 1/8 square Voltage 115 V Frequency 60 Hz Phase 1 ~ Nominal power at shaft (P2) 373 W Current 5,6 A Max. airflow 8058 cfm Fan impeller speed 850 r.p.m. Weight 75 lbs. Certificate AMCA Air Certified, cULus