Solid material and while it's convenient that it comes assembled, the first time we received this, it was damaged. One door was completely pulled out from the side and the screws completely stripped the holes out and the piece with the magnet latches was broken off. It was unfixable. The second time, parts of the door weren't completely assembled. A little wood glue would fix this, but it's the principle that I was getting an assembled unit that was disappointing. The item, itself, is great, though. It serves the purpose and does look great.