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This unit offers both
Is the 669941R compatible with all Nordyne cabinets
Thermal Stability: Rated for consistent performance in temperatures up to 140°F
Always replace like-for-like using the S8402-028 to maintain system integrity
Lennox 40L81 Flame Sensor Kit Els PW 17895 This unit offers bothThe Lennox 40L81 Flame Sensor Kit is the critical genuine OEM replacement for maintaining combustion safety in Lennox HVAC systems. Engineered as a direct 1: 1 substitute for 40L8101 and LB 94701A, this kit is vital for the SureLight ignition system found in G23, G26, G32, and 90UGF series furnaces. As a veteran grade HVAC flame rod, it utilizes flame rectification to signal the control board, ensuring the gas valve remains bridged only when a stable
