Thank you for reviewing W66 height-adjustable dual monitor stand for wall. This vesa monitor wall mount with perfect design fits most screens up to 38 inches within 25 pounds, compatible with VESA Mount Patterns of 75x75mm or 100x100mm. Please CHECK the Size, Weight, VESA, and Wall types before purchase. With a solid aluminum body, this monitor arm wall mount will protect our devices from shock. It can be very secure when mounting on the right walls, such as most Wood, Concrete, and Brick walls. (Note: Don't install into drywall alone )The mechanical spring arm not only features a flexible movement structure, but it is also a heavy-duty build: safer, more stable, and more durable than the gas spring. We can also adjust the tension according to the weight of our monitor.This wall mounted monitor arm enables instant and effortless adjustments+90° to -25° tilts, 180° swivel, and 360° rotation, which help us to achieve the optimal position for work, even perfect for a standing workstation. It is a good idea to mount a monitor on the wall if we want to free up desk space. Besides, the monitor wall arm can also be retracted to the corner, coupled with hidden cable management, a tidy workstation is always refreshing. Finally, Thanks for taking time with us and please feel free to contact us no matter before/during/after sales when you have any questions. Your satisfaction is always our top priority.