SmartRack Portable Server Rack Cooling Unit, 12,000 BTU, 120 V Provides 12,000 BTU/h (3.5 kW) of cooling capacity in a portable chassis. Compact, portable, self-contained design. Included 71-inch tube aims cold air where it’s needed, such as an overheated rack enclosure or equipment hot spot. Output can be precisely directed or used for general room cooling. Built-in timer and auto-restart. Plugs into a standard 15-amp outlet (NEMA 5-15R).