This clever little tool will help you divide your shelves into organized sections, so you can easily locate the item you need without a fuss. Plus, it's made of solid material, so it can handle all types of media - from vinyl records to magazines and binders. BRAND OPTIONS: Kallax 13-3/16" wide, 13-3/16" tall and 15" deep. There are 5 vertical dividers which will grant you 6 compartments that are a little less than 2" wide and 12-11/16" tall. Better Homes and Gardens 13" wide, 13" tall and 15" deep. There are 5 vertical dividers which will grant you 6 compartments that are a little less than 2" wide and 12-1/2" tall. This product is very easy to assemble. It comes together like a sandwich. The dividers snap into the top and bottom and the entire unit slides right into your cube shelf. All measurements are approximate. Unfinished: MDF (medium-density fibreboard) which is 1/4" thick and a brownish color. Very strong. Because they are made of a natural material, the color and appearance of each piece may slightly vary. Our MDF organizers & inserts are unfinished. We are not responsible for any alterations made to these by the customer. Any items other than the product described shown in the pictures is not included.