The birch plate is finished with a clear marine varnish. It is weather proof, but also will flex a bit without cracking. A kick strip across the back to help keep the edge from wearing. I used 1/2" to save some weight over 3/4 or 5/8". Its attached to the bed via rivnuts in the bed box, and low profile wide head countersunk bolts. The furniture are attached via wood teenuts. This requires placing, marking, and removing each piece. I thought 1/2 was too thin for a simple wood screw install so went with the teenuts. I thought of putting a textured bedliner finish on the plate, but decided I wanted the wood finish. It looks much better and will be easier to clean. The downside is its slicker.
The L track and eye loops are for strapping down anything in the center. I put in a fork mount towards the back as well. What's nice about L track is its easy to move the eye loops around. The eye loops will not interfere with the sides of the boxes and wear the finish. The plastic L track caps were hard to find and were trimmed down.
The tops I covered with black carpet to help not wear the finish as much. We'll have a pup along sometimes. The entire top has a extrusion to retain a nut to put in a removable eye bolt. I'll have a few things on top and want to be able to strap them down. The tops made flat so we can sleep in it without the top up. if needed.
The center is wide enough to walk in, and easily fits a common sized aluminum box for a step stool.
This pretty much finishes out the camper part. It's got a 35L dometic fridge, slide out kitchen with a 6 gal tank and 18" stove. A couple of lockable storage boxes for backpacking gear and whatnot.