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