Description Centrifugal air delivery system Ready to operate right out of the box 18-gallon water tank Powerful 3000 CFM free air and 2,400 CFM delivered air Cools approximately 700 square feet Lowers temperatures 15_ to 25_ F Easy operation Brand new model for 2008! Durable one-piece molded plastic polyethylene housing 3/4" garden hose connection supplies water Centrifugal Air Delivery System. No fan blades Shipped completely assembled and ready to operate, right out of the box Operates for a fraction of the cost of A/C Fan Size: 12.5" diameter x 11.0" width Drive Type: Centrifugal Ship Weight: 110 lb