Reference systems designed especially for facilities, with sturdy metal brackets to withstand heavy use. Wall systems expand without limits by mounting additional wall systems side by side. Glare-free, polypropylene sleeves with rugged frames. Angled wall bracket holds sleeves open. Also use Durable 535900 to expand the VARIO Desk & Partition Wall Systems. Includes metal wall bracket with mounting hardware & template, sleeves & snap-on tabs. Assorted PanelsTwo each: black, blue, green, red & yellow; includes snap-on tabs. Rack Style: Reference; Material(s): Metal; Sheet Capacity: 20; Number of Compartments: 10.