Rheem Ruud Weather King 24v Furnace Relay 42-22444-04 42-23114-03 42-25104-06. It is designed to replace Rheem/Ruud/Weather King/Corsaire part #s 42-22444-04 42-23114-03 & 42-25104-06. Relays are switches that open and close circuits electrically.
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