packages for multiple goods containers are secured by tensioned straps into integrated , load bearing , stackable units for palletizing , storage and supply - line service . rigid , semi - rigid and flexible containers , including multi - tiered tubs are accommodated by the system . cardboard usage is reduced 40 to 50 percent . die - cut spacers , flaps and occlusions , and dividers separate the containers , giving frictional integration under strapped compression . cruciform spacers enable reductions in stock gauge . packages are ventilated , for goods identification and cooling . l - section rolled stock makes simple , strong , ventilated bases and caps . re - usable plastic trays can form cap and base portions of the package .