Display and organize with this 12 Cubby Cube Insert for your Cube Storage Organizers. It comes in 5 pieces, is very easy to assemble and does not require any tools. You just slide the 5 boards together and you're done! Each divider has 12 cubbies. The opening sizes are listed in the 3rd picture. We make our 12 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 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. Our MDF organizers & inserts are unfinished. 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. The front-facing edges of the insert will be banded with White iron-on melamine edge banding. The remaining edges are left unfinished. There will be an additional charge to band the other edges. Please contact us before placing your order if you would like the other edges to banded.