A plurality of containers (32) are pitiable into tubular shelves (22). The containers (32) are cylindrical in shape and are sized so that they can be pushed sideways into a slot-like opening (26) in the tubular shelf (22). The containers (32) cam open the slot opening (26) both when they are pushed into the tubular shelves (22) and pulled out from the tubular shelves (22). End portions of the tubular shelves (22) fit within sockets (24) formed in, or on axles formed on, the side walls (16, 18) of a storage rack (10).