Brand new Therm Core Super Heavy Duty 5.5 Kw replacement heater element. Fits 99% of all spa packs with the Stainless Steel heater tube. The special coating virtually eliminates failures. Well worth the investment. This will replace the generic 6-FLO element. Features: Titanium : Special protective coating that is applied on the heater element to help keep the heater element lasting longer from bad water in the spa or hot tubs. Features: Heater element With O-ring Double bend Amps: 22.9 A 10.4 Ohms Made in USA 2" H x 1.5" W x 10" D, 0.75 lb Specifications: 5.5 kW / 240 V Collection: Spa Universal collection Dimensions & Weights 2"H X 10"D X 1"W Regardless of the age of your spa pack, if the only thing broken is the heater element, the economical thing to do is to replace the heater element. This replacement heater element fits any spa controllers or spa packs that takes a universal hi-flo element including products made by Balboa, Gecko, Spa Builders, Hydro Quip, ACC, Acura Spas, Len Gorden, Coleman, Watkins, Dimension One, and many others. The heater housing must be a Flo-Thru metal tube, at least 15 inches long, and at least 2 inches in diameter. The heater terminals should be more towards one side of the heater tube. 5.5 kw = 18766 BTU Dimension: 10 inches long, 1.37 inches across and fits in a 15 inch long Flo-Thru heater metal tube that is at least 2 inches in diameter. The distance between the heater terminals from center point is 1.25 inches. The heater terminals are more towards one side of heater. The 5.5KW Heater Element fits the following Heaters: C2550-0304A, C2550-1056, C2550-1054, 2550-0535, C2550-0809, C2550-0807, C2400-0807, C2550-0066ET-A, C2550-0321-A, C2550-0621, C2550-0621-A, C2550-0165, 20-00517, C2550-2315, C2550-0155, C2550-0309, C2550-0307, C2550-0736, C2550-0071, C2550-0073, C2550-0313N, C2550-0213N, C2550-0256, C2550-0056,