Standard Letter Size: Each bookboard measures 8.5 x 11 inches, ideal for book covers, document binding, frame backing, and presentations; clean-cut edges and uniform thickness ensure professional resultsThick Heavy-Duty Chipboard:This 80pt chipboard(2mm) offers excellent rigidity and structural strength with minimal flex; please confirm the thickness meets your project requirements before purchasingSturdy & Durable : Made from recycled materials, this bookbinding board provides dependable strength while remaining easy to cut, score, glue, and paintEasy-to-Work Surface: The smooth craft cardboard surface works well with ink, markers, paint, and adhesives, making it suitable for labeling, covering, and finishing projectsVersatile Uses: This chip board for book binding is ideal for bookbinding boards, hard covers, binder backs, albums, box construction, display backing, and other heavy-duty craft or DIY applications