The York 026-41594-000 3-blade Fan is built to improve the performance of HVAC systems. The size of this fan blade is 35.2" in diameter and 7/8" bore, and this fan blade is made of steel, so the performance and durability are guaranteed. The fan is built to be tough and accurately sized at 29.5" in length to help with the distribution of air within specific HVAC systems. #York #026... https://www.partshnc.com/fan-3blade-78bore-for-york-part-026-41594-000