I bought the red 36" 8 compartment shelf. It is heavy duty particle board with a maple laminate. It came in two boxes. One box was like 25 lbs and the other like 50lbs. The shelf also comes with wheels so its easy to move around. It took my husband less than 2 hours to put together. The holes are already drilled and you will see the screw heads on the outside red part of the shelf. The construction is pretty solid but my main issue is that 2 of the corners were chipped on the shelves. We patched with wood glue so that the laminate wouldn't peel any worse. I got mine for $219 on sale. I shopped around and this was the best i could get especially with no tax or shipping. The small compartments measure 10.25" Tall, 11.25" wide and 14" deep. I really liked the shelf online and then i got it and had my doubts but now that we use it I'm quite happy with it.