ERGONOMIC HEIGHT RANGE & REDUCE EYE, NECK AND BACK STRAIN - Height adjusts between 4.2'' to 19.7'' from the desktop. The height adjustment allows more than 200 height adjustable positions, with a maximum height of 19.75''. This height adjustable desk gives you the opportunity to work in a more ergonomic and comfortable position, easing pain that you may experience in your eyes, neck, and shoulders from sitting for extended periods at a time. DUAL TIER 37'' LARGE WORK SURFACE & FULL SIZE KEYBOARD TRAY - At almost 38" in width, this ergonomic desk converter has plenty of space for all of your devices, allowing you to raise your entire dual-monitor workstation to a more comfortable height. The top surface measures 37" x 24" providing plenty of space for single monitor, dual monitor, and laptop + monitor setups while also including an ergonomic keyboard tray and a convenient tablet slot. SUPERIOR STABILITY & PROTECT YOUR DESK - A standing desk converter you can trust! Its strong base can hold up to 38 lbs.! Sturdy enough to hold all of your favorite accessories, and anything your super powers require. Featuring non-skid silicone pads on the base, this stand up desk converter can be placed on virtually any flat surface or desk without slipping and sliding or leaving scratches. PRE-ASSEMBLED - Very minimal assembly out of the box! You will only need to connect the keyboard tray with 4 screws (provided in the box). Place on your existing desk and start organizing your workstation. We are so confident in this innovative and ergonomic design.