Product review (1 stars): Another Poor Design from Whirlpool
This is a poorly designed support. The front tab is too long with no mid tab to assist as in the rear.  The part broke twice. What I did to fix the second one was to epoxy a thin 1/16 inch aluminum bar to the top flange and countersink in a couple of stainless screws . That reinforces it enough to handle the weight and does not interfere with shelf sitting evenly across the supports.