EPA/CARB COMPLIANT. Ultra tanks include our new 90° fuel withdrawal assembly that rotates 360° to reduce fuel line kinks and a direct sight fuel gauge with glass lens for years of clear viewing. Seamless one-piece polyethylene construction, 2-stage self-venting fuel cap and advanced styling make these a perfect portable fuel tank for storage in transom well or in other small areas. Moeller Marine EPA/CARB compliant portable fuel tanks are manufactured from high-density polyethylene with ultraviolet inhibitors. Advanced manufacturing techniques provide the highest quality product components available and meet the new "low permeation" standards put in place. All our portable tanks 12 gallon and under meet current United States Coast Guard, and ABYC standards.