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making the LFRK909-VT-3/4-1 universally applicable to both
The M573-5108 is primarily intended for HVAC ventilation control
surface-mount footprint—suitable for 2” x 4” switch boxes—simplifies the furnace control board replacement process for field technicians
the 7616BR
Thermal Resiliency: Rated for operation in ambient temperatures ranging from -40°F to 136°F (-40°C to 58°C)
Lennox 45M66 Collar Assembly 319847-401 making the LFRK909-VT-3/4-1 universally applicableThe 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