... In. Portable Air Cooler, 2,high performance, 3,Cools 1,800 sq. ft,/ 4, Variable Speed 5, Durable ,energy saving. 1)24 In ... molded polyethylene housing.2. Equipped with high performance 1/3 h.p. variable speed motor.3. No need to install, portable ... gas, population density and others where need ventilation. 24 In Swamp cooler