Display and organize with this 4 Cubby Cube Insert for your Cube Storage Organizers. Great for storing CDs, yarn, shoes, spray cans and rolls of vinyl, fabric or paper. We make our 4 Cubby Cube Inserts for the following brands of cube organizers. Please see 2nd picture for dimensions of each cube. 1. Better Homes and Gardens Cube Storage Organizer 2. Thresholds/Brightroom Cube Organizer Shelf 3. IKEA Kallax Shelf Unit It comes in 4 pieces, is very easy to assemble and does not require any tools. You just slide the 4 boards together and you're done! Each divider has 4 cubbies. The opening sizes are shown on the 3rd picture. Please note: Because this insert has a back you will feel air resistance when you slide the insert into your cube shelf. This insert is meant to be used with cube shelving without a back. If your cube shelf is against a wall we recommend pulling it away from the wall, sliding the insert in and moving the cube shelf back. If your cube shelf has a back, slide the insert in very slowly so that the trapped air can escape. FINISH Options: 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. We are not responsible for any alterations made to these by the customer. White: White Melamine coated MDF which is a little less than 1/4" thick. Very strong. Melamine is easy to clean, waterproof and scratch-resistant.