The Fellowes Professional Series Premier Keyboard Tray FEL8036001 is designed to optimize your workspace by moving your keyboard and mouse off the desktop. It features a curved design that provides total knee clearance and brings you closer to the desk for improved ergonomics. The tray allows for one-handed height adjustment and includes a knob for tilt adjustment, along with a memory foam wrist support for added comfort. The mouse tray can be mounted on either side and swivels for convenience. With dimensions of 28-1/5"W x 21-1/4"D x 5-3/4"H, the height adjusts from 2-5/8" above to 4-1/4" below the track.