PanasonicMicrowave Turntable Support F290D6W50XP Replacement roller wheels / turntable support for Panasonic microwave ovens. (BEFORE ORDERING, PLEASE CHECK COMPATIBILITY WITH YOUR MODEL BY LOCATING YOUR MODEL NUMBER IN THE LIST BELOW ). Overall diameter of the ring is approximately 8 1/4 inches. The wheels are approximately 5/8 inch in diameter. This turntable support replaces Panasonic part # F290D6W50XP