Love this system! I bought all the solid system boxes and wall shelves. Turned them into a van shelving system. This is by far the best setup I've used in my van. I am a skilled craftsman/repairer. I don't know how to make the van more economical other than tweaking a bit and using the space behind the boxes. I added some folding brackets on one side to make room for larger packages. Great job Dewalt!