The LG 3390W1A017A Microwave Glass Tray provides a stable, heat-resistant surface that supports even cooking and reheating. This circular glass tray sits on the microwave’s turntable ring and rotates smoothly during operation, allowing food to be exposed evenly to microwave energy. By ensuring consistent movement, it helps prevent hot spots and uneven heating. The tempered glass construction is designed to withstand regular temperature changes while supporting common cookware and food containers. Replacing a cracked or missing tray helps restore proper microwave function and protects internal components from spills. Its transparent design allows easy monitoring of food, while the smooth surface simplifies cleaning and routine maintenance.