Plotter Paper Guys’ 20lb Inkjet Vellum is specifically engineered to have a smooth surface that accepts ink evenly and achieves excellent density without pooling or running. Our vellum is 100% cotton is transparent, without using solvents during manufacturing. Lines created with pen and pencil will be look clean and precise. Setting the industry standard, our 34″ x 150′ Roll is sure to meet your print needs from overlays to Diazo intermediates. This vellum retains strength, stability, transparency, and printing qualities under exposure to heat, light, and atmosphere. It will not become yellow, brittle, or opaque with age, so it is truly archival. Plotter Paper Guys product number 20IJV34150-PPG contains 1 roll per package.