Lennox 12J17 Relay 322838-754 it is optimized for Reznor

it is optimized for Reznor units requiring a 16-inch diameter and a 36-degree pitch

Direct OEM Replacement: Ensures exact fitment and restores original AHRI-rated efficiency without field modifications

featuring a 3/4-inch stroke and a 4-8 PSI spring range for reliable fail-safe operation

It is suited for maintaining proper airflow across coils and ensuring system efficiency in both cooling and refrigeration cycles

Lennox 12J17 Relay 322838-754 it is optimized for ReznorThe Lennox 12J17 Relay is a heavy duty 24V DPDT N O Sequencer Relay engineered for precision timing in electric heat applications and furnace blower control. This genuine OEM component, also identified as Lennox 104284 02, utilizes a thermal sequencer design with a voltage compensated PTC (Positive Temperature Coefficient) heater. The double pole, double throw (DPDT) configuration with normally open contacts ensures reliable staging of heating