"Designed for safe, powerful cooling in areas where airborne gas or debris is potentially combustible. Dimensions W x D x H in. 74 x 86 x 36, Amps 18, Garden Hose Attachment Yes, Fan Diameter in. 48, Power Cord ft. 55, Water Reservoir gal. 40, Air Delivery CFM 20,000, Speeds qty. 1, Volts 110/220, Cooling Capacity sq. ft. 4,000, HP 1/2. 1 HP bronze motor, pump and switches are sealed to prevent sparking Durable polyethylene housing is rust and leak proof Requires hardwiring to prevent sparking"