Drawer easily attaches to most workstations without tools or complex instructions. Patented clamp attaches unit to desktop (5/8"-1 1/2"w) without surface damage. Offers three height positions below desktop to ensure personal comfort: Tray tilts at -3, -6 and -9 degrees to suit personal preference. Soothing memory-foam wrist supports with Microban antimicrobial product protection stay cleaner and place hands/wrists in neutral position. Separate keyboard and mouse platforms allow you to position mouse on right or left side keyboard tray. Sturdy, impact-resistant tray fits standard and ergonomic keyboards. 33-3/4 wide space is needed to fit the drawer.