Max Screen Size: 40'; Max Weight: 12kg (26.4lbs); VESA Compatible: 100×100/75x75mm Monitor Swivel: 180; Tilt: 180; Rotate: 360; Full Extension: 529mm (20.8') Installs from Top Side: no crawling under your desk required Suggested Desktop Thickness: 0.39'~2', Clamp and Grommet Spring Mechanism: ensures effortless and precise adjustments Two Included Mounting Options: clamp and grommet Quick-Release Plate: for simplified installation and cable management