I love them! I had the plastic ones before (which I paid MORE for, believe it or not) and these are a thousand times better. They're stronger, better built, more versatile, as far as positioning and ability to stack, and they're nicer looking to boot! What more could I ask for in a two shelf system? You can place them side by side, one atop the other or in an 'L' configuration. Your imagination is the only limiting factor.
The plastic ones would sometimes bend with too much weight or they'd feel unsteady if you put more weight on the top or set things unevenly. Not so with these. I can put a dozen cans on top with nothing on the bottom, or put all the weight of the cans on one side on top and the stacked shelves are as sturdy as they are with nothing on them. I almost can't believe how nice they are for the price. I'm so damned glad I got lucky and found these.
I'd tried so many different types of things for my upper pantry. I'm 5'3" and though I can reach the front of that shelf, getting anything past the first few inches is not an option for me without using a step stool. The turntables I tried all were lousy. They advertised holding up to sixty pounds. Yet they'd slow down to a dragging crawl if I put more than three cans on them. So I went to the stacks and they too failed to live up to their claims. But these guys did what they said they would, and then some. I couldn't be happier. In fact, I'm ordering another set for the other side of that pantry cabinet. The ability to arrange them in different ways allows me to place another set next to these as long as I face them in the opposite direction. And I'm going to do just that. Get these shelves. I swear to you with all I have (although it ain't much) you will NOT BE DISAPPOINTED AT ALL!