I put all the parts together yesterday & fits pretty good. One of the panels is a bit tight in the slot, so I should have made those cuts just a hair wider, but they all slide in. Here is a photo of it all put together. I used #8×2.5″ wood screws for the corners & #8×1.5″ wood screws to mount the bottom 1×2″ boards on. The 1st test I will do without my vacuum attachment to see how much dust the panels keep out of the rest of the shed.