Can I stack two bookcases on top of each other?

Most commercial bookcases are not designed to be stacked. The correct approach for tall storage is to order a single taller unit (5-shelf, 72" tall) rather than stacking two shorter units. If stacking is necessary, ensure both units are mechanically linked and the combined assembly is anchored to the wall. Never place one bookcase on top of another without manufacturer-approved stacking hardware. At OfficeFurniture2go.com, we advise on safe tall storage configurations — call 1-800-460-0858.