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Claim 1

A STORAGE BOX COMPRISING AN ELONGATED RECTILINEAR CONTAINER FORMED FROM A BLANK OF FOLDABLE STIFF PAPERBOARD MATERIAL, SAID CONTAINER INCLUDING A FLOOR, A FRONT PANEL, A REAR PANEL, SIDE PANELS AND ELONGATED RAIL FLAPS INTEGRAL WITH AND CONNECTED TO SAID CONTAINER ALONG FOLD LINES INSIDE SAID CONTAINER, SAID RAIL FLAPS HAVING SMOOTH UNINTERRUPTED UPPER AND LOWER SURFACES, SAID RAIL FLAPS FURTHER OVERLYING AND BEING DISPOSED CLOSELY ADJACENT TO SAID FLOOR ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID FLOOR, SAID RAIL FLAPS HAVING UNBROKEN FREE EDGES FACING ONE ANOTHER AND DEFINING BETWEEN THOSE FREE EDGES A SLOTLIKE SPACE ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID CONTAINER, AND A FOLLOWER MEMBER FORMED FROM A BLANK OF FOLDABLE STIFF PAPERBOARD MATERIAL AND DISPOSED TRANSVERSELY OF AN MOVABLE LONGITUDINALLY OF SAID CONTAINER, SAID FOLLOWER MEMBER HAVING A PAPER SUPPORTING PANEL, A RAIL-ENGAGING PANEL, A FLOOR ENGAGING PANEL AND SAID PAPER FOR MAINTAINING SAID RAIL-ENGAGING PANEL AND SAID PAPER SUPPORTING PANEL IN A PREDETERMINED ANGULAR RELATIONSHIP, SAID FLOOR-ENGAGING PANEL COMPRISING A CENTRAL PORTION HAVING A TRANSVERSE DIMENSION WITH RESPECT TO THE CONTAINER WHICH IS LESS THAN THE WIDTH OF SAID SLOT-LIKE SPACE AND EAR-LIKE PROJECTIONS INTEGRAL THEREWITH AND EXTENDING TRANSVERSELY OF THE CONTAINER UNDER SAID RAIL-ENGAGING PANEL AND LYING BETWEEN SAID ELONGATED RAIL FLAPS AND SAID FLOOR TO GUIDE SAID FOLLOWER MEMBER IN THE LONGITUDINAL MOVEMENT OF THE LATTER IN SAID CONTAINER, SAID EARS BEING SHAPED TO EXPOSE DIAGONALLY OPPOSITE CORNERS OF SAID RAILENGAGING PANEL FROM THE FLOOR OF THE CONTAINER, WHEREBY SAID RAIL-ENGAGING PANEL RESTS UPON THE RAIL FLAPS WHILE THE EARS ARE RECEIVED BETWEEN THE RAIL FLAPS TO FACILITATE ASSEMBLY OF THE FOLLOWER MEMBER IN THE CONTAINER.