If you are looking for the best polymer susan for your wall cabinet, you are in the right place. Revered as the best in the industry, the Rev-A-Shelf® Polymer full-circle wall susans with single, double, and three shelf options are available in 16", 18", and 20" diameters. They come with a durable chrome post and adjustable hubs in your choice of bottom mount or telescoping options. The smooth polystyrene shelves turn independently of one another.