6 Sheets Brown Chipboard 80 Point Extra Thick 12 X 18 Inches Larger Size .080 Caliper XX Heavy Cardboard as Thick as 20 Sheets of Regular Paper Extra Extra Heavy Chipboard 80pt (point) .080 (.08 inch) thickness = 2mm 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