Board with a marker, piece of cardboard and a empty HW package. Nothing was measured and just eye balled. Did goof a few places. But its as much of a detail planes as I need. For me this is about as big as one could be. A 12/4 would be better then the 8/3 [8 small / 3 big ] There is a good 1/8in space all around a HW card so they fit easily but snug into the cubbie holes. Which will hold 5-6 packages deep each. 3 middle shelves and one long top one. would be neat if I had access to a 3d wood cutter, do a logo and lettering. Though I could never build one to hold everything, it can display most of the good stuff. But I bet many of us could use a full floor to ceiling one. Instead of handing down Grandmas China cabinet, you get Grandpas HW cabinet