Rigid Construction: Features a moisture-resistant frame that maintains structural integrity under high-velocity airflow

ensuring a drop-in solution for legacy Barber Colman infrastructure

Always verify your specific model's parts list to ensure the 121866 is the correct specified thermal limit for your cabinet configuration

The modern PopTop actuators are not backwards compatible with the vintage Erie Classic series

This direct drive blower motor supports flexible installations with its dual voltage 120/240V capability

Lennox 51M87 Pressure Switch 323055-751 Rigid Construction: Features a moisture-resistantThe Lennox 51M87 is a precision engineered furnace pressure switch designed for critical venting safety within Lennox HVAC systems. This 1. 6" WC SPDT N. O. pressure switch functions as a fail safe, ensuring the inducer motor is generating adequate static pressure before allowing the ignition sequence to proceed. The 51M8701 is the identical direct replacement, maintaining the exact factory set point of 1. 60 inches of water column. As a Single Pole