Sturdy Alvin chipboard is an ideal base for mounting architectural models. Features a smooth, brown finish (color may vary). Architectural chip board is a popular surface for creating memory books, embellishments like die-cuts, lettering borders, and frames for scrapbooks. .030" thick (approx. 1/32") chipboard sheet measures 30" x 40". PACK OF 50. Alvin ANB30-50 architectural chip boards are made in the USA.