Model CH 2212-1C has two 1000 watt elements that can be switched on / off by toggle switches to produce 1000 watts or 2000 watts of heat. 15' cord and NEMA 5-20 molded plug. Model CH 6424-1C has two sets of 1425 watt elements that can be switched on / off by toggle switches to produce 2850 watts or 5700 watts of heat. 15 cord and NEMA L6-30 twist lock plug.