Lennox 77M09 Box 321894-708 Always verify the temperature stamping

Always verify the temperature stamping on your existing switch to ensure a 115/85 match

Fabricated from durable materials to resist corrosion and maintain structural integrity under high RPMs

because Carrier

With a MERV 6 rating

Lennox 77M09 Box 321894-708 Always verify the temperature stampingThe Lennox 77M09 Burner Box Side is a vital structural and functional component engineered for high efficiency gas furnace maintenance. As a critical part of the combustion housing assembly, this side panel provides the necessary containment for the burner sparks and flames, ensuring that thermal energy is channeled directly into the heat exchanger. For contractors performing a Lennox HVAC repair, the 77M09 serves as more than just a metal plate; it