Alkon Rounda file System is a unique Filing System with Rotating Tires which is made from ABS plastic. Size is 78 cms diameter with 6 partitions. Accomodates 24 box files or 80 to 100 flat files per tier. Available in 2, 3, 4, & 5 tier sets with total unit height as under. 2 Tier 108 Cms. 3 Tier 149 Cms. 4 Tier 189 Cms 5 Tier 230 Cms.