Get Interlocking 'Pelicans'
Shifting loads and loose cargo are not a problem for the Inter-Stacking (ISP) Cases, according to Pelican-Hardigg (Torrance, CA). The IPS cases are engineered with “wave design” stacking ribs (on their lids) and molded in-discs (on their bottoms) that lock the cases together in a stack. In addition, the cases are available in six sizes that can accommodate for a range of 4 to 25 cubic feet of usable storage space. Other standard features include an O-ring seal, and internal atmospheric purge valve, and up to eight “comfort grip” high-impact polymer handles.
Check out www.pelican.com  for more information.