Our Boom Storage Boxes are constructed of channel iron base with tubular steel frame, expanded metal sides and a heavy duty PVC to cover with tie downs, Boom loading either from top or from fold down ramp ends. Box is equipped with folk-lift slots on each side and lift slots for slings on each corner.   Applied Fabric Technologies, Inc Boom Boxes Boom Boxes are an economical storage system. Tailor made for your boom. Boom Boxes are strong and effective. Boom Box Trailer Allows easy handling and storage. Used mainly for emergency response. A simple adaption from Boom Box. Boom Box Trailers are effective and versatile.