Product review (5 stars): Seems a perfect replacement, but haven't actually used it.
We wanted a spare before the part went extinct.  Our original frig shelves are still usable, but several have cracked.  We've swapped them around so the heavier use ones - e.g., the milk shelf - are secure, while the cracked ones get lighter loads.  I'm a bit disappointed that these shelves aren't designed for better longevity, but I won't hold that against this item for the sake of this review. (the purpose here is "replacement part")