Pallet Pak units are designed for light-duty transport (non DOT approved) for indoor or outdoor applications. The base of the pallet frame is designed for forklift transportability. The rectangular pallet paks have a metal frame and plastic base. The vertical paks have poly bases. The 300-gallon pak can be stacked two-high. The tanks are manufactured from medium-density polyethylene with U.V. inhibitors and designed for containment of liquids of up to 1.7 specific gravity. Tank walls are translucent for level viewing and equipped with gallon indicators.