Chris, check out Rev-a-Shelf and Hafele. Both of those mfrs. have most everything you can imagine to kit out your cabs and drawers. Ciao ciao

Depending on your cabinet type and your nature of frugality, Ikea also has trash organiers and lazy susans. Search for "waste sorting" and the "Rationell" cabinet line.

Also, on this forum, bellsmom did a smokin' retrofit of a corner cabinet. A lazy susan without the center pole and far more storage. Her thread link is posted below.

cheers

Here is a link that might be useful: bellsmom awesome supersusan retrofit thread

We have a plastic rev-a-shelf lazy Susan and it is flimsy and useless. So I would steer clear of that. Inspired by Bellsmom, we are converting our corner cabinet to the super Susan approach (no center pole, but you need a shelf underneath each Susan to support it). I just ordered Hafele solid maple pie cut lazy Susans with no center hole. We'll see how the conversion works out.

As for the size, these are generally sold by the diameter of the circle. So you might need a 24" diameter. You also have to watch the overall shape, and order either pie cut or round depending on your cabinet doors.

With a Super Susan, does it come with the shelfs to install on?

No, you'd need to make those or have them made.