The Corner Cut Folder is made of one piece of board cut so that it has a flat, unbroken bottom, flaps forming the sides and ends, and side flap extensions meeting to form the top. The one-piece folder, also known as “Bookfolds” or “Bookwraps,” has a flat bottom with two short flaps forming the sides at each end and two longer, wider flaps forming the front, back, and top of the box. Depending on the depth of the contents, the wider flaps either meet or overlap on the top. The four panels are typically scored (creased) at different depths. One-piece folders are used to package items with a shallow depth, such as books and pictures. Book, poster, and picture frame shipper! This is a simple style that allows for easy loading of objects.