Lennox 45M66 Collar Assembly 322838-754 and Black for High) and

and Black for High) and check for proper 208-230V HVAC motor alignment to prevent premature wear on the blower wheel or housing

Constructed with a magnetic clutch

As the direct replacement for the H91DG-2

Primary reasons for replacement include heat-related warping

preventing damage to downstream electronics during a short circuit

Lennox 45M66 Collar Assembly 322838-754 and Black for High) andThe Lennox 45M66 Collar Assembly is an essential OEM replacement part designed specifically for high efficiency HVAC cabinet and ductwork transitions. This Right Hand Collar Assembly (part number LB 96380A) provides the structural interface required to maintain rigid connections at the unit discharge or return plenum, ensuring no static pressure loss at critical junction points. Manufactured to original Lennox HVAC equipment tolerances, the 45M66