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    Hayward Comfortzone Thermostat, Less Knob, CHXTST1930

    CHXtst1930 Thermostat without Knob - Fits Comfortzone CZ and Heatmaster HM (Hayward) Pool Heaters. This is a Mechanical Thermostat, for Millivolt Heaters by Comfortzone. Could Also Work with Pgs. and Cps Heaters. CHXtst1930 Can also be found on Comfortzone Heater Parts Pages:
      • Item: # ZHAY5317 Hayward Thermostat W/O Knob - Chxtst1930 Now Only! $46.54 Was $48.99
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