ensuring compliance with local energy codes

optimizing energy consumption

simplifying installation in tight boiler rooms or industrial manifold configurations

and 13S zone valves

Lennox 27M18 Orifice 321142-301 ensuring compliance with local energyThe Lennox 27M18 Orifice is a precision engineered 052 sized flow control component essential for maintaining the manifold pressure and combustion efficiency of Lennox commercial and residential heating systems. Designed as a direct OEM replacement part, this orifice (MPN: 27M18, replaces LB 99225) ensures accurate gas metering for Lennox T Class rooftop units and gas furnaces, specifically compatible with models including KGA036S4, KGA092, and LGH180