The Dometic WH-6GA is a market-leading water heater for mobile applications. Its robust burner system generates hot water quicker and for longer to ensure a comfortable and convenient showering experience while you're away from home. 6 Gallon Water Heater (Gas Only) Heating Method: Gas. DIMENSIONS: depth 20 "X height 12.62 "X width 12.62 "Input voltage (DC) 12 VRated input current (DC) 1 A. (Door not included, must buy separate)