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Your cart is empty.Firm & Easy Connection For Hayward Universal H-Series Low Nox Heater FDN and FDP Models. For Hayward Universal H-Series Low Nox Induced Draft Heater IDL2 and IDPL2 Models. Easy to insert the membrane pad to accept the connection of the ribbon cable. Equipped with 4-pin communication cable. Tight connection, not easy to disconnect and easy to install. Safe & Secure Work No need for any other complicated setup. Professional PCB welding, with anti-oxidation, heat and moisture resistance. Multiple tests to avoid potential safety hazards and to provide stable performance. Perfect & Precision Design With precisely aligned holes for easy connection. Clear digital display and LED light. Improve heating efficiency, save your cost up to 18% by reducing the running time of pump.