It is used on the "old design" split-case configurations

Avoid sharp kinks or strains

Precise Airflow Tuning: Features four distinct speed taps (High to Low) to match the existing system's demand for better air distribution

System Protection: Staggers the electric heat load to eliminate high-amperage spikes that can trip breakers or damage branch wiring

Trane BRG1557 Bearing 321142-301 It is used on theThe Trane BRG1557 Bearing is a heavy duty 2 bolt flange pillow block bearing designed for critical shaft support in commercial and industrial HVACR systems. Specifically engineered for 2 3 16 inch bore applications, this OEM Trane replacement part (also identified by the updated part number BRG01557) ensures precise alignment and reduces rotational friction in high demand air handlers, blowers, and rooftop units. Constructed from high strength cast