Front slot holds most tablets and phones Non-skid column base 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) Storage area underneath, between stacking columns, to store a small laptop Side groove hold pens and other small office supplies Height-adjustable monitor stand, 17.1 x 13 (435 x 330 mm), sits easily on your desk.