Our corrugated pads or corrugated sheets are made from 200# test corrugated and are designed to protect layers of products on skids or in boxes from crushing. Smaller size corrugated sheets are ideal for picture frames or to be used as stiffeners to protect important documents when mailing. Our chipboard pads are constructed from .022 kraft paperboard. These sheets provide added protection when stacking paper in boxes. Chipboard sheets or pads are commonly used as the stiff backing seen on a pad of legal or notebook paper. They are also used for strengthening envelopes or mailers.