Does this unit replace 2-wire or 4-wire sequencers

When a header fails or becomes restricted

312" orifice is precision-sized for 15 PSI differential service

is a high-capacity filtration solution engineered for moisture and acid remediation in large-tonnage refrigeration circuits

Lennox 45M66 Collar Assembly 321142-301 Does this unit replace 2-wireThe 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