We have a Closet Maid wire shelving rack that these fit on. It's the one with the free-sliding bars. These do not glide past the brackets, though, as they're too long in the back to bypass it without catching on the bracket. Not a big deal as long as you don't frequently have to slide them back and forth. They seem sturdy. I've not tried the labels, but they come with 2 sheets of labels which will be more than enough for my purposes.
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