Trerice BX91406-02SPB Thermometer 323269-701 the 21L99 is the official

the 21L99 is the official Lennox replacement part for the older 21L9901 part number

This blower wheel is precision-manufactured to eliminate the vibration and mechanical stress that often lead to premature motor failure

Freedom Series Compatibility: Seamlessly integrates with Eaton C306 overload relays for customized motor protection curves

while the ELECD2 is designed for 1/2" NPT conduit installations

Trerice BX91406-02SPB Thermometer 323269-701 the 21L99 is the officialThe Trerice BX91406 02SPB is a professional grade 9 inch industrial thermometer designed for precise thermal monitoring in HVACR and process piping applications. Engineered with a 0 to 100F temperature range, this unit features a universally adjustable angle stem, allowing for 360 degree rotation and 180 degree adjustment to ensure optimal readability in tight mechanical rooms. The 6 inch industrial stem is constructed from high grade aluminum,