Using An Oblong Dish - Kenmore ELITE 721.88502 Use & Care Manual

USING AN OBLONG DISH
When using an oblong dish, don't forget to place it in the center of the guide tray, or poor performance will result.
An oblong dish which is smaller than 13 inches should be placed on the glass tray. A dish larger than 13 inches should
be placed on the raised edge of the guide tray preventing it from touching the glass tray.
Otherwise, poor performance will result. (See Figure 6)
Figure 5 Figure 6 Figure 7