Lennox 25W78 Insert 320074-702 Durable Construction: Built to withstand

Durable Construction: Built to withstand the constant vibration and temperature fluctuations common in industrial mechanical rooms

Does the plate come with a gasket

It should only be used as a direct replacement for an existing S14S0017N07 or per the manufacturer's cross-reference guide to ensure control board communication and wiring compatibility

high-performance direct replacement for H481

Universal switches often lack the exact set point calibration (inches WC) required for safe combustion

Lennox 25W78 Insert 320074-702 Durable Construction: Built to withstandThe Lennox 25W78 NOx Insert is a critical combustion component engineered specifically for Lennox gas furnaces to reduce nitrogen oxide emissions. Designed for high efficiency heating systems, this OEM Lennox replacement part ensures that the burner assembly maintains optimal fuel to air ratios for a cleaner, more environmentally compliant burn. Constructed from heavy duty steel to withstand high temperature furnace environments, the 25W78 insert