Sturdy Alvin chipboard is an ideal base for mounting architectural models. Features a smooth, brown finish (color may vary). Architectural chipboard is a popular surface for creating memory books, embellishments like die-cuts, lettering borders, and frames for scrapbooks. .060" thick (approx. 1/16") chipboard sheet measures 30" x 40". 25 SHEETS. Alvin ANB60-25 architectural news chipboards are made in the USA.