Lennox 17J65 Orifice 326010-701 Each unit is individually hand-calibrated

Each unit is individually hand-calibrated and tested

Confirming the model and serial number prefix is recommended to ensure seamless duct and vent integration on 48-series equipment

The integrated 4-inch element provides precise thermal sensing

Compact 1/2" Porting: Standard 1/2" inlet and outlet threads allow for straightforward integration into existing gas manifolds without additional bushings

-40 to 160°F) to ensure accurate visual feedback of the 3-15 psig signal

Lennox 17J65 Orifice 326010-701 Each unit is individually hand-calibratedThe Lennox 17J65 Natural Gas Orifice (Part Number LB 69645) is a precision engineered heating component designed specifically for secondary burner regulation in residential furnaces. With a drill size specification of 0. 0935, this OEM Lennox replacement part ensures the exact volumetric flow rate required for efficient combustion and peak AFUE ratings. As a veteran technician knows, maintaining the correct manifold pressure depends entirely on the