Product review (5 stars): Don't forget to unscrew and re-screw the metal bar onto the new shelf
Great product, fit just like the original- don't forget to unscrew and re-install the metal bar from the previous shelf.  The bar is located underneath the front of the old shelf.  It provides sturdy support to the plastic shelf.  I would guess the previous bad review described this as flimsy because the bar wasn't re-attached.  I think it's important for stability.