Home Treats Adjustable Wire Add A Shelf Insert. Perfect for Pots, Pans Home and Kitchen Storage Organiser

I bought three in the end, and I would have bought more but the other shelves were too low. The best thing about this is the way the legs are joined , so that even if it overhangs the shelf a bit it doesn't fall off. Very easy to adjust as well.

Just a bit too high can only put low pans on top of this

You can use the space a available in a better way and things look tidier