"Low center of gravity. Molded-in recesses for pump, handles, hose storage and straps. U.S.A. FDA Approved Drinking Water Yes, Fill Opening in. 10, Tank Description Vertical, Drain Size in. 2, Tank Material Polyethylene, Tank Size gal. 550, Application Sprayer tank, UV Inhibitors Yes. Largest 100 all polyethylene DOT approved tank on the market Four 10-24 inserts for easy installation Molded-in gallon markings"