The Koldwave 8HK144 is a top-of-the-line industrial portable air conditioner delivering 144,400 BTU with coverage of 3,767 to 4,951 sq. ft. Features all steel painted cabinets, fiberglass insulation, R-454B refrigerant, dual 14" evaporator supply duct connections, dual 18" condenser duct connections, 16" return duct, fork lift slots, lifting lugs, heavy duty 4-wheel casters, cleanable vinyl chloride filters, and operating range of 64-113°F. Available in 220V/3 Phase or 460V/3 Phase configurations.