Rugged Construction: Built with an ASTM B584 bronze body and PTFE seats for long-term seal integrity

This burner door gasket and insulation assembly is a direct replacement for 100288663

Always cross-reference the part number on the existing board to ensure a match for voltage and terminal configuration

This Type TGEX 10 thermostatic expansion valve is engineered with a 6 ton capacity and features a straight body design (1/2" ODF x 7/8" ODF) to ensure streamlined installation in narrow piping layouts

which can lead to erratic flame signals or combustion instability

Lennox 75W43 Thermal Switch 323080-701 Rugged Construction: Built with anThe Lennox 75W43 is a high precision compressor thermal switch engineered for critical temperature regulation in industrial and residential HVACR systems. As a genuine OEM component (Manufacturer Number 103048 01), this HVAC thermal protection switch prevents catastrophic equipment failure by monitoring operational heat levels. It features a specified open temperature range of 239F to 257F, which interrupts the electrical circuit to protect the