Whynter 10,000 BTU Portable Air Conditioner (ARC-10WB) 10,000 btu cooling capacity recommended for spaces up to 300 sq. ft Self-evaporative system - exhausts most or all condensate under average ambient conditions CFC free r-410a refrigerant, lead free rohs compliant components Three operational modes: Air conditioner, fan or dehumidifier Includes extendable exhaust hose (up to 59") and window kit (up to 48"). Max. window kit length = 48" , Min. window kit length = 26.5"