Singleface corrugated is a product used for multi purposes. It typically is produced on a roll, however this product can be die cut or produced in sheet form. Singleface is produced with a ply of linerboard adhered to a fluted medium ply. As opposed to corrugated, this product is flexible and can be used to wrap products needing protection. The flute size determines grade: A flute is the largest, B flute has a smaller more compact flute and is more cost effective, and E flute utilizes a very small flute repeating in a fine pattern. Typically E flute is used where rigidity is needed.