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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
This 5" to 6" integral draft hood ensures proper combustion gas dilution and maintains a consistent neutral pressure point at the flue outlet
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The valve body's extended copper ends or flare fittings allow for straightforward installation
OEM Compatibility: Genuine York S1-025-26392-001 ensures seamless integration with existing wiring harnesses and mounting footprints
York 331-02977-000 Control Board Kit Refrigerant This 5" to 6" integralThe York S1 331 02977 000 2 Stage ECM Control Board Kit is an essential OEM replacement engineered for precise furnace sequence control and ECM blower motor modulation. Designed for two stage gas furnaces, this integrated furnace control (IFC) manages induction motor timing, ignition sequences, and multi speed airflow adjustments to ensure optimal thermal efficiency. It serves as the direct HVAC replacement board for several legacy models, including
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