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effective area
the "/U" suffix simply denotes a "Universal" packaging designation used by the manufacturer
Can I use this timer to replace an existing FM1 series module
Precise Calibration: Factory-set at 0
Nordyne 664243R Gas Manifold 319847-401 effective areaThe Nordyne 664243R Gas Manifold is an essential OEM replacement component engineered for precise gas flow management in residential and commercial heating systems. As a centralized natural gas distribution hub, this manifold ensures uniform fuel delivery to the burner assembly, maintaining steady combustion and thermal output. Designed to withstand the rigorous thermal cycling of high efficiency HVAC systems, the 664243R features a heavy duty
