2.5 - 4.0 cu. ft. 5 - 7.0 cu. ft. 8 - 10.0 cu. ft. Water Heater 6 Gallon Gas/Elec. Water Heater 6 Gallon Gas/Elec. w/DSI Water Heater 10 Gallon Gas/Elec. Water Heater 10 Gallon Gas/Elec. w/DSI ...