Pacon tru-ray heavyweight construction paper, 18″x24″, dark brown, 50 sheets tru-ray construction paper is made of heavy 76 lb. Stock. Heavyweight, 100 percent sulphite paper is tough enough to withstand scoring, folding and curling without cracking and tearing. Superior fade-resistance keeps projects brighter and fresher longer. Acid-free material offers less fading. Recyclable construction paper contains a high percentage of recycled fiber.