Perfect for work or gaming units, this Height-Adjustable Steel Desktop Stand helps prevent neck and shoulder strain with three height settings. For your optimal position, easily set the stand at 3-9/10" , 4-7/10" or 5-1/2". Adjustment is easy. Simply press the silver button and slide it to the next opening. Perforated top dissipates heat, allowing airflow to cool your monitor, laptop or gaming units.