The 630 Series Folder/Inserters offer two models for your specific job needs. The FD 633 comes with three standard automatically adjusting feed stations. The FD 635 has two standard feeders and one special feeder that can be manually adjusted for glossy and thicker paper stock. The versatility of this unit allows for processing forms of various lengths and thicknesses all at the same time. The exclusive AutoSet feature makes processing forms a snap, automatically setting the paper length, paper thickness, fold type, envelope size and double document detection.