Duploâ€™s top-of-the-line vacuum folder is capable of producing crisp, quality folds at speeds of up to 30,000 sheets per hour. Featuring a superior feeding system that accepts paper weights from 16 lb. bond to 67 lb. cover with no marking, the DF-600S can accept sheets sizes up to 14" x 20". The high-capacity vacuum feeder holds a full ream of paper, while the bottom-feeding system allows continuous loading of paper without interrupting the folding process. Setup and changeover are extremely fast and easy with the folderâ€™s built-in precalculated fold guides which indicate exact plate settings. Plus, an easy-to-read chart allows setup for various folds to be done in a matter of seconds.