Keeps laptop, LCD or projection equipment at the right height whether you sit or stand during your presentation. Four sturdy shelves hold a variety of equipment. Top shelf is 18w x 16d. Laptop shelf is 18w x 14d and adjusts from 19" to 39.5" high. Middle shelf is 16w x 9.5d; bottom shelf is 18w x 18d. Four 3" casters, two locking. Black powder coated steel frame. 18w x 30d x 40.25h. Shpg. Wt. 47 lbs.