Two flip-up doors with transparent panels cover the upper compartments, so books stay visible but dust-free - a combination that closed cabinets and open shelves each miss on their own. Below them the compartments stay open for everyday items. Each of the four bays measures 28.5 x 14.5 x 14 in inside and holds 35 lbs. The unit stands 62.5 in on a 29.5 x 15.5 in base and weighs 60.5 lbs, substantial enough that anchoring is worthwhile once loaded. Natural engineered wood; an instruction sheet is included.