These cardboard bins fit in our 4 Cubby & 6 Cubby Inserts for Kallax, Better Homes & Gardens & Thresholds/Brightroom. They are made of 200 lb. test corrugated cardboard (meaning very strong & durable) & are white on the outside. Very easy to assemble - no tape or staples needed - watch this video on YouTube to see how they are assembled (https://youtu.be/SfYQVA90444). The cardboard bins are white on the outside & brown on the inside. They are 4" wide, 12" deep & 4 1⁄2" tall. Don’t forget to add Bin Dividers, if needed: https://www.etsy.com/listing/1149420920/cardboard-bin-dividers-r455. 4 Cubby Inserts: https://www.etsy.com/listing/728890976/4-cubby-cube-insert-for-cube-storage. 6 Cubby Inserts: https://www.etsy.com/listing/742690237/6-cubby-cube-insert-for-cube-storage. All measurements are approximate. Any items other than the product described shown in the pictures is not included (scissors, yarn, measuring tape, yarn needle, crochet hook, knitting needles, etc.). All of my handmade items are made in a smoke free environment. My home is dog friendly but my little one does not come in contact with any of my handmade items or supplies. Thank you for looking & have a great day! White Corrugated Cardboard Bin - Fits in Our 4 Cubby & 6 Inserts For Kallax, Thresholds & Bhg X 12 1⁄2" R454
