The A19ABC-39 includes a bulb well for easy installation and features automatic reset with a screwdriver adjustment for secure setpoint management

The unit is equipped with a high-visibility composite plastic wheel for manual operation in tight mechanical spaces

Simplified Installation: Designed for an exact fit to reduce labor time and component strain

its primary function is to secure the combining air/gas mixture before it enters the burner

reducing labor time during service calls on compatible refrigeration compressors

Lennox 45K27 Flue Gasket 322838-754 The A19ABC-39 includes a bulbThe Lennox 45K27 Flue Gasket (also identified by part number LB 66251) is an essential OEM component for maintaining the structural integrity of the exhaust system in high efficiency gas furnaces and commercial rooftop units. Designed to withstand the thermal stress of combustion cycles, this high temperature flue gasket creates a critical airtight seal between the flue pipe and the furnace transition. By preventing the leakage of combustion by