Heavyweight 100% vat-dyed sulphite with longer, stronger fibers. Tru-Ray® Construction Paper is tough enough to take scoring, folding and curling without cracking and tearing. Its superior fade-resistance keeps projects brighter and fresher longer. Acid-free for less fade. 50% recycled fiber content and recyclable. Each pack includes 50 sheets. Each sheet measures 18" x 24" .