Spacefile’s Bi-Files and Tri-Files are popular systems, because of the amount of storage capacity in a small foot print, the high quality of the systems and the economical price points. Bi-Files and Tri-Files, previously known as Roll-Away II and Roll-Away III, are available with any of Spacefile’s ThinLine shelving. Bi-File systems have two rows of deep shelving with a rear stationary row and a front row that slides along a mechanical track. This allows you to double your storage capacity. Tri-File systems have three rows of deep shelving with a rear stationary row. The middle and front rows move laterally from side to side, giving you three times your original storage space.