The Ultra 500 LCD and keyboard mounting system is your entire workstation on a wall track. Two adjustment handles tighten the LCD into position. This model is designed to be mounted to a 19" (48.26cm) wall track, included with the unit. This model has a 19-inch (48.26cm) wide by 10-inch (25.4cm) deep flip-up keyboard tray with a slide-out mouse tray and an ergonomic wrist rest, which can be folded up when not in use. The keyboard tray on this model is on two articulating arms which can extend it to 34" (86.36cm) from the wall. Machined out of billet aluminum, this unit is powder coated gloss white for a durable, lasting finish. UL500-T19D-KUP-A2-MW