3M Akt180Le Keyboard Tray With Adjustable Sit/Stand Arm BlackDescriptionSpecificationsShipping The 3M AKT180LE Adjustable Keyboard Tray with Sit Stand Easy Adjust Arm from 3M lets you position your keyboard and mouse in an ergonomically correct position for maximum comfort and productivity. The easy adjustment system and wide range of arm height positions allow you to move between sitting and standing positions, providing ergonomic benefit and helping avoid repetitive stress injuries. The included WR310LE and