GE Microwave Glass Turntable Plate / Tray 12 3/8" # WB49X10227 This tray ONLY fits model numbers listed here. If you are unsure about compatibility please email us with your model number BEFORE ORDERING. Glass turntable plate / tray for GE microwave oven models listed below. Measures approximately 12 3/8 inches in diameter. The bottom turntable track where the wheels fit has an outside diameter of 9 7/8 inches. This microwave tray replaces GE part # WB49X10227