DURABLE® VARIO® Desktop Reference Display System - Desktop - 10 Double Sided Panels - Letter Size - Anti-Reflective/Non-Glare - Assorted Colors Desk reference system offers glare-free sleeves made of environmentally friendly polypropylene. Metal base can adjust to display at 60 degree or 30 degree angles. Sleeve frames include snap-on tabs and come in assorted colors including black, red, dark blue, green and yellow. Reference system includes a desk stand and 10 letter-size display sleeves that hold up to 20 documents with snap-on tabs.