I felt the same way, but I have a cnc machine (shopbot) so I reverse engineered the galley and box and spent $65 in 6mm okuome plywood. from the my local marine plywood guy for each. Can’t do it for anyone else though lest there be a copyrite issue. The special requirements led to designs of my own derived measurements but they look like copies and I do credit John Harris 100% for the concept. I was careful to size my box for my Engel electric frig/freezer, for which I ran power to the box. Will send pictures by email to anyone interested. Unless someone can tell me how to post photos to this site from my android tablet.