25 Sheets Chipboard 46pt (point) 5.5 X 8.5 Inches Heavy Weight Half Letter Size .046 Caliper Thick Cardboard Craft|Packing Brown Kraft Paper Board Heavy Weight Chipboard 46pt (point) or .046" (.046 inch) thickness = 1.17mm Backing for notepads, photos, and prints Make your own albums, frames, displays, covers, backs, boxes and containers Protect your shipments and storage of keepsakes and papers 100% recycled clean fibers