"The TPI tubeaxial direct drive fan is custom-built and features an explosion-proof motor. Explosion-proof motors are Class 1, Div 1, Group D and Class 2, Div 1, Groups F & G. U.S.A. Fans are made to order and are non-returnable unless there is a warranty/quality issue contact your Northern Tool representative toll-free @ 1-800-221-0516. Fan Diameter in. 18, Air Delivery CFM 4,600, HP 1, Dimensions L x W x H in. 18 x 20 x 20, Volts 115, Speed RPM 1,725. 1 HP explosion-proof motor is field convertible 115V/230V Motors are set to lower voltage 115V at the factory unless a request is made at time of order to set them to the higher voltage 230V 1725 RPM 6 blades 14 gauge steel drum including mounting flanges Fan can be mounted to operate in any position, Rugged cast aluminum blade Non-sparking Dimensions housing inner dim. 18in., housing outer dim. 20in., housing depth 14in. Bolt hole centers 19 1/2in."
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