375-inch square blower key is cut to a specific length required for specific York blower wheels

While they are washable

making it compatible with VFDs for precise airflow or fluid flow control

this is a dedicated OEM component specifically calibrated for BTH 150 and BTH 100 models

the 16-mesh bronze start-up strainer is intended for initial system debris collection and should be removed after the first 24–48 hours of operation to prevent flow restriction

Browning 1B5V52 Sheave 328140-751 375-inch square blower key isThe Browning 1B5V52 sheave is engineered for robust performance in demanding HVACR and industrial power transmission systems. This single groove sheave features a 5. 48 inch outside diameter, meticulously designed for optimal compatibility with a broad range of belts including 4L, A, AX, 5L, B, BX, 5V, and 5VX sections. Constructed from durable cast iron, it ensures longevity and consistent operation under heavy loads. The 1B5V52 is specifically