The LG MJS47373302 Microwave Glass Tray provides a stable rotating surface that supports even heating during microwave operation. This circular glass plate sits at the base of the microwave cavity and holds food containers while the unit runs. It operates by resting on the roller ring and coupling with the turntable motor, which rotates the tray to distribute microwave energy more uniformly around the food. The tray is installed inside the cooking chamber and can be removed easily for routine cleaning or replacement. By enabling smooth rotation and balanced support for dishes, this component assists in consistent cooking results and helps maintain proper microwave performance during typical use.