Lennox 21W66 Gasket 321894-709 Precision Balancing: Factory-balanced to reduce

Precision Balancing: Factory-balanced to reduce harmonic noise and prevent premature bearing failure in the furnace blower motor

This orifice is sized to balance liquid refrigerant and oil return rates

Is the ICP 1172839 board compatible with multi-stage systems

Rugged Build Quality: Constructed with heat-resistant materials and a nickel-plated sensing bulb for long-term durability in high-heat zones

utilizing an 06 orifice size for consistent flow regulation

Lennox 21W66 Gasket 321894-709 Precision Balancing: Factory-balanced to reduceThe Lennox 21W66 Gasket is a critical OEM replacement component engineered specifically for induced draft assembly sealing in high efficiency residential and commercial heating units. As a veteran tech knows, a compromised seal at the inducer motor lead to pressure switch trips and flue gas leakage. This draft inducer blower gasket (cross referenced as LB 106197) is designed to withstand high temperature combustion environments while maintaining a