typically downstream of the blower but upstream of any significant duct transitions to ensure reliable gas sensor readings

making it a versatile stock item for service contractors

eliminating energy loss in zoning applications

Listen for grinding

When brazing the ODF connections

Browning 4L690 Belt 318172-701 typically downstream of the blowerThe Browning 4L690 Belt is a heavy duty fractional horsepower (FHP) V belt engineered specifically for high demand HVACR and industrial blower applications. Featuring a 69 inch outside diameter and a standard 4L section (1 2" top width), this belt is constructed with high tensile polyester cord and a durable rubber body reinforced by a protective cotton wrap. This specialized design ensures maximum power transmission efficiency while significantly