Extra-long Atlas® aluminum marker trays. These aluminum blade style marker trays are 2 ¼" deep and come as a single one-piece unit in lengths of 10' and 12' long. The back of the ledge is 2 1/8" high and each unit is made of a heavy gauge satin anodized aluminum. You can order your marker tray with either a square cut corner or a softer, more stylish angle cut corner. The angle cut corners are not only more contemporary in design but also add a measure of safety eliminating any sharp angles, etc. Each Atlas® extra-long aluminum marker tray is shipped by truck and carefully packed in a heavy-duty cardboard shipping tube. Every order is made to order but still leaves our warehouse in as little as 2-5 working days. Atlas® aluminum marker trays are made in the U.S.A. Atlas® marker trays are a MyWhiteboards.com exclusive.