Marine Heat # HEC-201HB12V 28,000 BTU 2 Outlet Hole, Powder Coated Aluminum Housing, gets free heat off your engine's closed cooling system, 3-speed centrifugal blower kit includes heater, 3-inch vent hose (6' per vent) with directional louver, 4-position switch with mounting plate, 3-way wire harness (6'), all necessary mounting screws. Maximum draw is 7.7 AMPS. 9.3"W x 11.4"D x 6.4"H