This is a 60L2101 Blower Fan Motor 1/3 HP 115V 1075RPM 4-Speed Replaces Lennox 60L21. It is new in box. Odel 60L2101 is a drop-in OEM substitute for these original motor codes: US Motors K55HXHFZ-8638, Nidec A16029376, MFG NO. Fits most residential furnace blowers, air handlers and AC condenser fans. Wide Compatibility with HVAC Unit Models -Compatible with a full range of Allied, Armstrong, Concord and Ducane furnace equipment: 79A52, 21W85, 89C3601, 100649-01, 45H6901, 57C2501, 60L2101. Replacement Lennox part numbers: 29W7, 21W85, 45H31, 18M26, 79A52, 21L92, 89C36, 57C25, 45H69, 60L2101, 100649-01. Precise OEM Matching Performance Specs – This 60L2101 blower motor strictly follows factory standard parameters: 1/3 HP, 115V, 60Hz, 5.1 Amps, 1075 RPM and 4 adjustable speeds and CCWLE (Counter Clockwise Lead End) rotation, with a 5? F / 370V capacitor to guarantee stable, reliable startup airflow under all operating conditions. It features a 1/2″ diameter shaft, 5-5/8″ 48-frame body and unified mounting dimensions for seamless plug-and-play swap.