Action SpasStainless steel replacement heater assembly. 2-3/4” x 2-3/4” welded flange with dual 5/16” thermowells and a 1/8” npt pressure switch tap. 1-1/2”s QD tailpiece on side and 2”s QD nut on top bar. Manifold is 16” long and includes 5.5kW/240v heating element
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