VARIO Reference Partition Wall SystemDurable metal frame and panel holder. Partition frame frees up desk space and adjusts to fit panel walls ranging in height from 54" to 72" and up to 4" thick. Can be expanded to a maximum of 30 panels/60 viewing sides with the addition of two DBL-535900 systems (sold separately). Ten assorted color panels include two each: black, blue, green, red and yellow. Includes ten snap-on tabs and hardware.