Vertical Plastic Water Tanks are free-standing plastic tanks and are ideal for multiple indoor and outdoor applications: storage of potable drinking water, rainwater harvesting/collection, home emergency water storage, farm irrigation fire suppression. All Vertical Plastic Water Tanks feature a vented lid and come with a standard fitting package that includes one fill and one drain fitting. Vertical Plastic Water Tanks are manufactured from Food Grade Polyethylene with U.V. inhibitors and are designed for containment of liquids up to 1.0 specific gravity (8.5 lbs./gal.). Vertical Plastic Water Tanks are not designed to be pressurized and come with a 3-year manufacturer’s warranty. A concrete pad is recommended for installation. However, tanks may be placed on any flat-level “compacted” surface.