Baking Rack for Sharp Microwave / Convection Ovens R820 Series Metal baking rack for Sharp brand combination microwave / convection ovens in the R820 series. This microwave rack ONLY fits the SHARP models listed below. If you are unsure about compatibility please email us with your model number BEFORE ORDERING. The diameter of the rack is approx 10 3/4 inches. The rack is approx 2 inches" high. This rack replaces Sharp part # : FAMI-A104WRM0