Design for Ultrawide Monitor Screens: MOUNTUP monitor arm is designed for heavy duty flat & curved computer screens up to 43 inch, holds monitor weight up to 33 lbs, vesa mount with 75x75mm and 100x100mm. Compatible with Samsung, ASUS, Acer, LG, HP, AOC, BenQ, MSI, Dell, Lenovo, etc. Including but not limited to 49 48 47 46 45 44 43 42 40 39 38 37 35 34 32 30 28 27 25 24 23 22 inch pc. Full Range Motion-swivel/tilt/rotation: Offer a wider range of movement, the heavy duty monitor arm allows the screen to tilt up 90°/down 45°, swivel 180°, and rotate 360° from landscape to portrait. Long gas spring arm has a maximum arm extension is 25'' and a maximum height adjustment is 19.7" from the work surface. Easily find an optimal ergonomic posture. Two Mounting Ways & Quick Assemble: The monitor desk mount support C-clamp (drill-free, quick clamp without bolt knob) and grommet (optional) mount. The VESA plate connected to the arm adopts a lock plate for safety-screw-free insta