Optional: The stain-grade side option changes the type of material used on the sides of the cabinet from Birch plywood to Maple or Oak. The side will still be recessed 1/4-inch from the front corner. The stain-grade 3/4" flush side option also changes the side panel from 1/2" to a 3/4" thick so that the side will be flush with the face frame. The stain-grade matching end door option will have a flush side and a door attached to that flush side, which will stick out from the face frame by 3/4". If you have your cabinets stained or painted, the upgraded side will also be stained or painted. Click to view example of cabinet end options. An alternative is to use a separate end panel.