The plastic parts that hold the brackett to the shelf were broken.

The part just snapped into the shelf bar. Extremely easy to fix. Since you show the part in a grid I was able to tell, by holding my old piece up to the screen, that the new part would be the correct size. We have rentals and are always needing parts for appliances. Impossible to find locally.
Also the part came so quickly it was almost as good as buying it here in town. Thanks. Donna Bingham