A monitor arm that offers a wide range of height adjustment options, from 8.1" to 19.1" (205mm to 485mm) above your desk, extends up to 21.7 inches from the wall. Fine-tune your monitor setup with this gas spring monitor arm that offers 80° upward tilt, 15° downward tilt, 180° or 360°swivel, and screen rotation 360°. Rigorously tested through 10.000 cycles for durability and reliability. The C-clamp fits most desktops from 0.79" to 2.36" thick with a needed 3.5" depth, while the grommet mount supports desktops from 0.79" to 2.36" thick with a minimum grommet hole diameter of 1.97".