Location: 12 Furnishings / Casework
Another tweak to the blob. You can turn the Front Panel off. Why? So you can build the front of the cabinet out of a wall, and place the doors using 12 Furnishings / Casework / Cab Door Door JAM81. You would place that with the door tool, yes. (There's also Cab Door Object JAM81, the object tool implementation of the same thing.)
While I was in there I added a parameter for the box Stock Thickness. It defaults to 3/4". So the wall thickness should be 3/4" unless you change that parameter.
In plan, the front line is drawn at the front of the front, whether the object's panel is on or off. Tip: Use the front line as a guide to draw the wall.