3-HEIGHT ADJUSTMENT - This monitor stand can be adjusted to 3.98/4.8/5.5 inches to meet the needs of different people. An ergonomic viewing height helps to reduce fatigue, changing poor sitting posture. | SURFACE VENTS FOR COOLING - Our laptop stand has ventilation holes for quick heat dissipation, making your laptop run smoother and last longer. Please measure your device’s size before ordering（Max 14.5x9.2in） | 44 LBS LOAD BEARING & STABLE LEGS - This monitor stand riser supports not only monitors, but also electronic devices/ books weighing under 44 lbs. 4 legs designed with threads and metal locks offer stable daily use and 4 non-slip rubber pads improve its stability and protect your table surface. | INCREASE VALUABLE SPACE - Stack 2 computer stands together to get space for your mouse, keyboard, router, boSURFACE VENTS FOR COOLINGoks, notebooks, etc. Raise your monitor and create extra storage space for your clean and neat desk at the same time. | 1 STEP TO ASSEMBLE & EASY TO ADJUST - Just screw the 4 legs on the desktop stand, and that's it! To adjust the height, press the silver metal lock and pull to the level you want. We are happy to help you save time for your important work!