Engineering-Blueline Rolls Recycled These 20# wide format, engineering rolls are ideal for printing architectural and engineering documents, posters, and signs. Additionally, each of these rolls are eco-friendly, containing 30% Post Consumer Waste paper. These rolls provide quality print results. Each wide format engineering roll is designed for use on all leading OEM laser printers, including OCE, Xerox, KIP, Canon, and Ricoh. 2 Rolls per Carton.