Goldstar 2B71852A Microwave Turntable Tray This microwave tray replaces Emerson part #'s: 2B71852A Overall Width: 10 1/8" Dia. Outside Diameter of Turntable Track: 8 1/4" Inside Diameter of Turntable Track: 6 1/2" Width of Turntable Track Itself: 1"