Blodgett 15853 5/8" Blower Wheel 10-3/4" X 2-1/8" is a key part of proper airflow in commercial ovens. The 5/8 inch blower wheel, 10 3/4 inches in diameter and 2 1/8 inches wide, is intended to move air efficiently through the oven chamber. When hooked up to the oven's blower motor, the wheel spins like crazy to create a plenty flow of air, helping, no matter how complex the au gratin... https://www.partsfe.co.uk/blodgett-15853-blower-wheel-10-3-4d-x-2-1-8w-5-8