Cabinet Pull-Outs by Rolling Shelves make it easier to reach everything in your cabinets without reaching or straining. The shelves are made with 9 ply, 1/2" Baltic Birch for the back and sides and 13 ply, 3/4" Baltic Birch for the front. The 1/2" Melamine shelf bottom is easy to clean. Dovetail grooves lock the front, back and sides together, creating a strong shelf that can hold about 100 pounds of weight and endure constant use. The rolling shelves are available in widths from 6" to 30" and have a depth of 20". The unfinished shelves have a natural, hand-sanded finish that can be painted or stained to match your cabinets. The pre-finished shelves have a clear coat which gives them the look of natural Maple. The rolling shelves are available Pre-Assembled and also come Do It Yourself for easy assembly.