Image shown at left 42001-0057S Sta Rite Max E Therm. Transformer. Used on Sta-Rite Pool Heaters. Sta-Rite is a common name in pool heater parts. The schematic diagram of heater parts, Sta-Rite pool heater parts, Sta-Rite heater parts and spares (spare heater parts) are listed. Always low prices and fast shipping. Discount Sta-Rite swimming pool heater parts and other swimming pool heater parts are always in stock and available. PLEASE NOTE : SOME ELECTRONIC POOL HEATER PARTS ARE NON-RETURNABLE, PLEASE CONSULT OUR RETURNS PAGE FOR MORE INFORMATION ON RETURNING PRODUCTS.