An 18 x 9 x 7.5 in drawer sits at the base of this unit - deeper than the usual shallow tray, so it takes stationery boxes and folded cables rather than just pens. Above it three open shelves measure 20.5 x 10.5 in with 12.5 in and 13 in between them, each rated to 44 lbs while the drawer takes 33 lbs. Thickened board gives the 21.5 x 11.5 x 41.5 in frame a weight of 42.5 lbs, which keeps it stable when the drawer is pulled fully out. A user guide ships with it.