G.E. Microwave Glass Turntable Plate / Tray 14 1/8" WB39X10038 This microwave tray fits ONLY the GE models listed below Measures approximately 14 1/8 inches in diameter. The inner ring where the turntable wheels fit has an outside diameter of 10 1/8 inches. This microwave tray replaces G.E. part # : WB39X10038