Details: Fingertip controls put your monitor at the perfect height and angle to reduce eye, neck and back strains. Highly adjustable arm moves smoothly up or down, in or out, tilt, or rotate with ease. Strong durable construction withstand the rigors of the busy office. Easy to install clamp or grommet mounting fits desk up to 4" thick and grommets up to 2 3/4" in diameter. VESA MIS-D compliant for monitors up to 15 lbs and 27". Saves valuable desk space. Use with Alera Sit-Stand Lifting Workstations. Wall/Ceiling Mounts & Hardware Type: Desk Mount; Mounting: Desk; Clamp/Grommet; Depth: 3 7/8" to 20 1/8"; Width: 3 7/8" to 40 1/4".