ST236-62 Features: -Bristol sheets. -100% cotton bristol is an industry standard. -Also useable for charcoal, pen and ink, airbrush and light washes. -Vellum Surface has a toothy finish. Product Type: -Drafting Supplies. Dimensions: Overall Height - Top to Bottom: -11 Inches. Overall Width - Side to Side: -17 Inches. Overall Product Weight: -1 Pounds.