The VS20E is molded from a polyethylene construction creating a strong corrosion free product. It is constructed as a sturdy double walled foam-filled (polyurethane insulation) unit. Engineered with the farmer in mind, this waterer allows easy access to submersible heater, water line, incoming services and provides effortless cleaning; an extremely low maintenance product!This waterer provides (or contains):One hole electric unitStainless steel hatch cover and access doorDesigned with rounded corners to handle livestock abuse while ensuring liv