Got this for a deep pantry shelf (it’s 16”, not small) and loaded it with some pretty heavy canisters of flour and sugar (at least 4 containers that each held about 5 lbs. of flour or whatever).
 I was afraid the weight would make the turntable buckle or turn slowly or unevenly but it worked really well! 
The bearings or turning mechanism works smoothly and quietly even when it was full of fairly heavy containers. I’m planning on getting another one for the other side of the pantry shelf, as it makes it SO much easier to see what you have stored without having to lift things out of the way or shuffle heavy containers around. 
You might think it’s not a great use of space since it’s round (and cupboards are square - at least in my house!) but you actually end up utilizing space in a better way because you can SEE everything! 
I’m a huge fan!!