This gridwall tray is 23 3/4 inch (L). The shelf is 1/8 inch thick tilted clear acrylic and closed ends. This gridwall tray increases merchandising space in a neat and organized way. The holder is ideal for pictures, greeting or packaged cards, CD's, DVD's, books and product information packets making it extremely versatile. This gridwall tray has curved tabs that fit easily on your wire rack for a quick install.