This is still very much in the "raw". It is going to look very different when the patina is applied. Here you see the front panel before it is fitted to the inner tub. The flap will be fitted and enclosed going back 8 inches. Looking at this, I am wondering if you want a lip enclosing the bottom as well as the top? The design only allows for a lip on the top. When it is closed off, the enclosure will be where the sides meet, not where the bottoms of the two pieces meet.