3 HEIGHT ADJUSTMENT: Raise computer monitor, notebook or any device by 100mm, 120mm or 140mm off the desk to create a comfortable viewing position and a healthier sitting position which help reduce stress on the neck and back. Simply press the button on the leg and lift/lower the platform to adjust between the different height levels. SIMPLE ASSEMBLY: Our laptop and monitor stand comes with 1 platform and 4 legs, all you need to do is just screw the 4 legs into the platform. No tools required. One minute is enough. VENTILATED DESIGN: Sturdy platform with vented holes, this stand will prevent overheating and keep the device running cool. STURDY MATERIAL: Large 370 x 235mm durable metal shelf fit most flat screen display, laptop and printer, maximum support weight up to 20kg. Anti-skid rubber pads prevent slipping or damage to your work surface. Sleek modern black design complements any desk while adding extra space underneath the stand for storage.