Rev-a-Shelf's polymer lazy susans are revered as the best on the market. Whether you are replacing an old unit or just adding lazy susans to your corner cabinet, you will not be disappointed with the Rev-a-Shelf 3472-28-11-52 28'' White Polymer 2 Shelf Lazy Susans.With high-quality design and durable rotating hardware that makes installation simple, this lazy susan will help you organize your kitchen cabinets in a breeze. Designed for lower or corner base cabinets, this lazy susan fits cabinets with a 26'' to 31'' inner height. Make sure you mount the cabinet doors to the unit for proper operations so you can access your kitchen essentials with ease.Double check your cabinet's opening (inside dimensions) to allow the best fit. Measure side to side (width), front to back (depth or length), and top to bottom (height). Double check to make sure your product is within measurements, and don't forget to consider any obstructions (plumbing, hinges, etc.).