Chief MFG KGL110 20" (508 mm) Adjustable Laptop Desk Mount. Single arm design allows extension up to 20” (508 mm). (Previously sold as FGL110). Monitor can be independently positioned for users' optimal viewing comfort (sitting and/or standing), for privacy, or for information sharing. Centris™ Technology uses the center of gravity to balance the screen, providing easy finger adjustments. Compatible for screens having VESA® 75 x 75mm or 100 x 100mm compliant mounting patterns.