If you see "cupping" or significant wear on the interior faces of the flanges

This hub assembly is specifically designed for circular recorders including the DR4200

Always match the voltage (120V) to your specific furnace control output

Engineered for versatile field integration

Heil Quaker ICP 1185181 Motor 320720-756 If you see "cupping" orThe Heil Quaker ICP 1185181 Motor is a high performance, 1 2 HP ECM motor kit designed for precise airflow control in premium residential furnaces and air handlers. Operating on a 120 240V, single phase power supply, this direct drive blower motor utilizes a constant torque ECM 5. 0 Eon platform to maintain programmed CFM against varying static pressures. As an OEM HVAC replacement part, it ensures seamless integration with International Comfort