Common Questions & Technical Support How do I set the draft for an oil-burning application

Replacing a failing relay with this high-rating 30-amp component restores reliable circuit closure

making it ideal for freeze protection and industrial process cooling

Whether you are replacing a seized 1170566 pulley or performing seasonal maintenance on an RGS120 layout

Lennox 53J96 Sheave Els PW 17895 Common Questions & Technical SupportThe Lennox 53J96 is a high performance single groove cast iron sheave designed for precise airflow management in commercial and residential HVAC blower assemblies. This variable pitch motor pulley features a robust 4. 15" outside diameter and is engineered for a 7 8" fixed bore shaft, providing a reliable mechanical interface for power transmission. Designed as a direct OEM replacement sheave, the 53J96 allows technicians to fine tune system