Sunbeam Microwave Glass Turntable Plate / Tray 11 1/4" This microwave plate ONLY fits the Sunbeam models listed below. If you are unsure about compatibility please email us with your model number BEFORE ORDERING. Glass Turntable plate / tray for smaller model Sunbeam microwave ovens. Measures Approximately 11 1/4 inches in diameter. The inner ring where the turntable wheels fit has an outside diameter of 9 1/4 inches.