We have an older refrigerator and my wife was going to order a couple of shelves that were broken. I told her to wait… went down into my shop and made these. They can be removed etc. The ends are 2X4 so I could give them a shape to allow the door clearance. The hook system is luane (any thin plywood will do) for stability and the bottom is 1/2 thick board. I made them 2 years ago and they work great. Wood working in a practical venue… and the wife is happy!