Justrite Gator Drum Management System Modular Gator-Tuff polyethylene system combines efficient drum storage, positive spill control and safe liquid dispensing. Design permits combination storage of 30 and 55 gallon drums, as long as the larger drums are always stored below small drums to keep the load balanced. Molded-in drum lock channels, "open-view" 66 gallon sump on base module support loads up to 3000 pounds total for the system. Stack module supports 1500 pounds and shelf supports up to 60 pounds. Base module meets EPA 40CFR 264.175 Standard.