I purchased 10 of these to suspend stem glasses in standard Kitchen cupboards. The normal width racks would have been too long. I can stack three glasses in each rack - and still have room underneath for tumblers and whisky glasses. I'm short so putting glasses in the higher shelves was inconvenient and always involved a climbing effort.
The price was great - I priced them in loads of other places - and $20.00 and upwards for each rack was the norm.
Well worth the retrofit to make my kitchen 'user friendly'