RoadWorthy Back Seat Heat 4000 24V Truck Heater,2100 BTU For SUVs, vans, boats, RVs, tractors and equipment cabs, New patented energy cell, Instant heat output Adjustable thermostat, Fan only and heat settings, Dashboard switch, 20 Ft. universal bracket Cabinet remains cool to touch, Compact Design, Keeps vehicle warm and dry, Directional air flow, Lightweight, easy to install, portable Voltage: 24 VDC, Current: 25 AMP @ 24 VDC, Power Consumption: 600 Watts, 2100 BTUs, Wire Harness Length: 20 ft., Fan Rating: 102 CFM