Engineered as the direct T605DFH-4 replacement

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offering consistent performance in temperature ranges from -4°F to 131°F

The Williams P151800 Gasket is a critical OEM replacement component engineered for high-performance sealing within Williams Forsaire Direct Vent wall furnaces

Optimized Flow Rate: The 3/4 inch NPT threading supports high BTU throughput required for larger furnace cabinets

Lennox 73K17 Limit Switch 322838-754 Engineered as the direct T605DFH-4As an HVAC technician, you know that a failed limit switch is a primary cause for furnace short cycling and overheating. The Lennox 73K17 is a genuine OEM limit switch designed specifically for Lennox, Allied, Armstrong, and Ducane heating units. This SPST normally closed high limit control features a 7 inch insertion length, making it compatible with various air handlers and furnaces, such as the G23Q5 6 series. It operates as an auto reset limit