while the high-temperature fiberglass insulation protects the wiring from the extreme thermal cycles common in HVAC applications

and low-voltage automation controllers

but the orifice #02 specifications are identical

The Lennox 89M74 Run Capacitor is a standard-setting OEM replacement designed to restore and maintain the electrical phase shift required for high-torque motor startup and efficient continuous operation

corrosion-resistant brass to withstand high-temperature combustion environments

Lennox 27M78 Flue Gasket Kit while the high-temperature fiberglass insulationThe Lennox 27M78 Flue Gasket Kit is a critical OEM component designed to maintain an airtight seal between the flue pipe and the heating appliance. Also identified as Lennox 27M7801, this high temperature resistant gasket kit is engineered to withstand the thermal stress and corrosive secondary heat exchanger environments typical of Lennox G40DF, G50DF, and G60DF series units. Proper sealing of the flue system is essential for preventing dangerous