Heavyweight 100% vat-dyed sulphite with longer, stronger fibers. Tough enough to take scoring, folding and curling without cracking or tearing. Superior fade-resistance keeps projects brighter longer. Acid-free for archival quality. Each carton contains 32 packages of 9 x 12 and 8 packages of 12 x 18 heavyweight construction paper. Roll Size: N/A; Sheet Size: 12 x 18; 9 x 12; Paper Color(s): 10 Assorted Colors; Paper Weight: 76 lbs.