The sides of the boxes have triple thickness once assembled, ensuring strength and making them a perfect solution for stacking or racking, further saving storage space. 200 x strong A4 archive cardboard storage boxes with handles and integral lids, size 15"x12"x9" (395x310x255mm). These one-piece boxes are an excellent solution for storage of files, folders, lever arch files as well as smaller office and household items. Also widely used in removals. They are provided flat packed and are easy to assemble, with integral lids.