The Coates 6ILS Electric In-Line Spa Heater is 5.5 kw, 240V, and is 18,772 BTU. The Coates In-Line Electric Spa Heaters are compact to accomodate many different spa and hot tub plumbing configurations. The overall length including the unions for the Coates 6ILS Spa Heater is 19.5" and the weight is approximately 10 lbs.
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