This one-piece bookfold has scores at multiple depths to ensure the proper fit for your products. Simply place the product in the center of these 12 1/2 inch x 12 1/2 inch x 1 inch (inside Dimensions) white Corrugated Bookfolds and fold in the sides at your desired depth of 1/2 inch, 3 inch or 3 1/2 inch and seal with packaging tape. Attractive 200#-B/ECT-32 white corrugated construction makes a quality impression. They are shipped flat.