The Middleby Marshall 46522 Oven Blower Switch Kit provides manual electrical control for the blower circuit in compatible commercial ovens. This switch assembly fits a 7/8-inch mounting hole and integrates with the oven’s blower control wiring. Activating the switch allows the connected blower circuit to be switched according to the equipment’s operating sequence. https://partsfe.com/blower-switch-kit-for-middleby-part-46522