Put your keyboard and mouse on this caddy and adjust their height, tilt, and depth. All Anthro caddies use the same platform with an oval mouse extension that pivots out from the right side. Platform comes with integrated foam wrist rest. It's the height range, adjustment method, and track length that set caddies apart. The height range is from even with the work surface to 6" below. It also tilts 20° negative to 10° positive. Pull the release lever then move the keyboard into place by hand. Keyboard platform measures 19.5"w x 8"d. Oval mouse extension measures 8"w x 9"d. Requires 18.5" mounting depth. Drill required for assembly.