Lennox 47K09 Orifice The manufacturer updated the part

The manufacturer updated the part number

ensuring compliance with UL 555 and NFPA 90A standards

When you need to provide positive close-off or controlled movement in constrained commercial HVAC environments

at 4 microfarads

factory specification during swap-outs

Lennox 47K09 Orifice The manufacturer updated the partThe Lennox 47K09 Natural Gas Burner Orifice is a precision engineered OEM replacement part designed for specific natural gas furnace and heating applications. This #42 orifice spud is calibrated to ensure the correct air to fuel ratio, facilitating optimal combustion and consistent flame stability across the burner assembly. As a veteran technician knows, maintaining the exact orifice size is critical for achieving the rated BTU input of the