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This heater is design to be a perfect replacement for the original Cal Spa XL Heat Exchanger. Measures 15" x 2" and come with the heater tail pieces including gaskets, and is pre-tapped for pressure switch. This heater, C2550-0011, is the more reliable flow thru style design with a replaceable element. Pressure switch or tape on sensors are sold separately.
Manufacturer: Therm-Core Manufacturer Number: C2550-0011 - 26-0011-7S-K Manufacturer Warranty: 1 year partAdditional Part Numbers: B24055XL, F2550-0001, F2550-0011, HEA14100310, HTR465552000,