Ultima-File is the high-density filing system that provides ultimate protection for important large format documents. The system is fire-resistant with insulated double steel walls and water resistant, created by a 360° protective apron. Each cabinet can hold up to 3,000 3-mil active documents or 6,000 for archival storage. A unique spring compression system puts gentle pressure on the redrope file folders keeping them upright and flat. A fold up shelf serves as a worksurface to reference files right at the cabinet. All folders are stored at a comfortable height eliminating stooping and bending.