Economical yet sturdy desktop system. Easily expandable by connecting additional systems to each other (connectors included). Glare-free, polypropylene sleeves have rugged frames for heavy use. 10 sleeves provide 20 viewing sides. Includes desk stand, 10 sleeves and 10 snap-on tabs. Assorted Borders—Two each of black, blue, green, red and yellow. Rack Style: Reference; Material(s): Polypropylene; Sheet Capacity: 20; Number of Compartments: 10.