Easily adjust your keyboard and mouse to your correct ergonomic position and work in comfort. Enjoy the freedom of lever-free height adjustment so you can fine tune the keyboard's position even in less than ideal workspace situations. Suitable for corner or straight-on workstations that accept a 18 inch track. Compatible with ergonomic keyboards.3M Adjustable Keyboard Trays help place your keyboard and mouse at proper level to increase comfort and productivity. AKT90LE has an easy adjust arm just tilt platform, adjust and release to lock in place. Adjusts height to 2" above mounting surface and 5.5" below mounting surface. Tilt is adjusted by dialing tilt knob to desired angle. Standard all in one platform with wooden construction minimizes bouncing. Includes all in one leatherette gel wrist rest with antimicrobial product protection and Precise Mouse Pad that can be placed on right or left of keyboard. Lifetime warranty on arm, five years on platform, and one year on gel wrist rests. Contains 70% preconsumer recycled content. Black.