and 12" AC models within the 80 and 90 Series

Inverse Sensitivity: Optimized for low-water cutoff (LWCO) and boiler level management

and boiler feed pump operation across 120V or 240V circuits

Key Benefits Direct OEM Compatibility: Verified for Utica-Dunkirk heating systems

The integrated control module manages the variable speed blower functionality

Lennox 71M48 Hardware Kit 320734-701 and 12" AC models withinWhen you are out on a service call and need to restore a system to factory spec performance, the Lennox 71M48 Blower Hardware Kit (also identified as LB 107597A) is the OEM standard solution. This comprehensive assembly is engineered specifically for Lennox HVAC systems, including high efficiency furnaces and air handlers. As a technician, you know that using substitute fasteners or generic brackets can lead to vibration issues or improper blower