down to an overall four foot length enables the use of the stabilizing bar in the length way direction between front and back previously placed cargo bars to accommodate different load depths reference is now made to fig1 d and 1e to further illustrate this use stabilizing bar 20 u2032 is identified differently only in the manner for which it is utilized that is rather than extending side to side between the side rails 18 bar 20 u2032 extends length way between bars 20 as will be further explained the width configuration of bars 20 thickness 30 is similar to the thickness of the side rails 18 and end clamps 28 can similarly be clamped onto the bars 20 as illustrated with this enablement collapsibility to different lengths and clamping capability to the bars 20 the bar use 20 u2032 enables support against in pocket sliding that is assume the cargo of pocket 32 has been unloaded leaving the cargo 34 adjacent pocket 32 free to slide cross ways into that pocket as illustrated a bar 20 u2032 can be adjusted down to the length between bars 20 and butted up against cargo portion 34 and clamped onto the bars 20 to securely hold cargo 34 in place reference is now made to the end clamps illustrated in fig2 8 as will be observed the clamps include opposing.