Lennox 37L50 Fan Blade 321042-401 Using this on a propane

Using this on a propane system will cause improper combustion and safety hazards due to different orifice sizing

By maintaining structural integrity under extreme heat

this standard-opening valve is compatible with Q3450 or Q3480 intermittent pilot burners

Right Angle

but always verify your specific system piping if a separate check valve is required for bypass flow in heat pump reverse cycles

Lennox 37L50 Fan Blade 321042-401 Using this on a propaneThe Lennox 37L50 HVAC Fan Blade is a standard replacement component designed for high efficiency airflow in residential and light commercial condensing units. This 18 inch diameter condenser fan blade features a 4 blade configuration with a 1 2 inch bore, engineered to maintain precise static pressure and optimize heat transfer across the coil. Constructed from heavy duty aluminum to resist corrosion and stress cracking, the 37L50 is a direct OEM