This is an optional 21" Pullout Keyboard tray for use with CD/FD Series Deluxe Workstations CPU Racks. These workstations are ideal units for training rooms and computer labs. These are versatile and provide excellent workspace for classroom learning. Height is adjustable in accordance with the user preferences for added comfort. Each lab station accommodates up to two persons and are all adjustable up to ADA compliance. All workstations come standard with CPU racks. Choose from 4 vibrant top colors.