Front slot holds most tablets and phones Non-skid column base protects work surface Drawer for supplies maximizes desktop space Supports a 13″ – 32″ (330 – 812.8 mm) monitor up to 22 lb. (10 kg) Stackable columns let you choose between three different heights, with a maximum height of 6.6″ (168 mm) Large storage area between stacking columns to store virtually any laptop Side groove hold pens and other small office supplies Height-adjustable monitor stand with large format 19.7″ x 13″ (500 x 330 mm) sits easily on your desk.