Lennox 51M91 Gasket 322838-753 50" WC but the SPST

50" WC but the SPST contacts remain open

This discharge service valve allows technicians to isolate the compressor during repairs without venting the entire system charge

This OEM furnace pressure switch monitors the vacuum created by the inducer motor to ensure proper venting of combustion gases

By providing proactive monitoring

Lennox 51M91 Gasket 322838-753 50" WC but the SPSTThe Lennox 51M91 Blower Gasket is a critical high temperature seal designed specifically for Lennox furnace blower assemblies and 4 inch inducer motor housings. Engineered to withstand the thermal cycling inherent in high efficiency HVAC systems, this 4 inch blower gasket ensures an airtight seal between the blower housing and the furnace cabinet, preventing bypass air and maintaining static pressure integrity. This OEM replacement component is vital