Kuuma 120V 20 Gallon Water Heater - Vertical 4-Way Mount Kuuma Premium Water Heaters are durable, compact, and efficient. Features include an aluminum tank and marine-grade aluminum alloy case for years of use. Kuumas line of water heaters are the water heater choice of many OEMs. This water heater features a vertical, 4-way mount arrangement. Features Marine-quality aluminum alloy case Water heater choice of many OEMs UL listed to UL174 TIG welded Specifications Part 11870 Capacity 20 Gallon D