Camplux 10L 2.64 GPM Portable Propane Water Heater The Camplux 2.sixty four GPM propane water heater is made especially for lower-use out of doors purposes. Ideal for sheds, outdoor showers, or campers and RVs, this tankless water heater can support 1 or 2 appliances at a time. It connects conveniently and securely to plain propane tanks, with quit