The TPI commercial exhaust fan is ideal for turning over a large volume of air rapidly. Heavy-gauge construction makes fan a popular choice for agricultural and horticultural applications. U.S.A.The TPI commercial exhaust fan is ideal for turning over a large volume of air rapidly. Heavy-gauge construction makes fan a popular choice for agricultural and horticultural applications. 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.) 36 Air Delivery (CFM) 9,870 Volts 120 Speeds (qty.) 1 Dimensions L x W x H (in.) 41 1/2 x 4 x 40 Needs to be Hardwired Yes * Single phase * Ideal for turning over a large volume of air rapidly * Heavy-gauge construction * Suitable for agricultural and horticultural applications * Permanently lubricated, drip-proof motor