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A system to stow 20-feet containers into 40-feet cell guides. Starting from tank top you can stow from 1 to 4 tiers 20-feet containers (only secured by single stacking cones) and top them up with at least one 40-feet container. The stackweight of the 20-feet containers is to be reduced to about 60 tons. See also Anti-Rack Spacer stowage system and Side support stowage system.