EPA/CARB COMPLIANT.Ultra tanks include our new 90º fuel withdrawal assembly that rotates 360º 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.