... ; 2)Variable Speed; 3)Cools 2,500 sq. ft; 4) Portable evaporative cooling fan; Variable Speed 1. Durable one-piece molded polyethylene ... (Gal) 53 (200L)Weight(lbs) 231 (105KG)Application areas:1)Industry: injection molding, printing, shoe-making, food processing, rubber, clothing, electronics ... gas, population density and others where need ventilation. HAILAN brand Portable evaporative air cooler