Product Description
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York JCI Twinning Control Board Kit - Standard ECM (S1-33103764002)
Genuine OEM York/Source1 Circuit Board Kit for Standard ECM Furnace Twinning. Part Number: S1-33103764002. Johnson Controls (JCI) twinning control allows two York standard ECM furnaces to operate together as one system. New OEM replacement part. Ships free to the lower 48 states or pick up locally.
