Blue Glass Replacement Dish. 3" inside diameter, 3-1/2 outside diameter. 4-1/4" diameter at edge of the scalloped top. 1" deep. This is a heavy glass dish which will withstand freezing conditions even when filled with liquid. Used in the BBF1 Mealworm Feeder. Also MWFWH, MWFWP, MWFPLW and MWFWHD.