The Hotbox greenhouse fan heater is designed to hang from the greenhouse structure or can be free standing. Hotbox Elite features:2.7Kw will Heat 100 sq. ft. , Frost protection 180 sq. ft. All stainless steel construction - ideal for use in greenhouse environments. Thermostatically controlled fan heater. Fan only option or heater with fan. Fan only 69w. UK manufacture with One Year Guarantee. Dimensions: Length 410mm (16") , Diameter 220mm (8.5"). IPX4 rated.