General Industries’ STI-P3 tanks are UL-58 and UL-1746 labeled tank’s and designed for underground storage of flammable and combustible liquids with three way protection: dielectric coating, electrical isolation, and sacrificial anodes. Manufactured of carbon steel with a 10-15mil polyurethane coating, single or double wall with capacity up to 50,000 gallons and available in single or multi-compartments. All General Industries products are fabricated using our ISO 9001:2015 Quality Management System., and carries a Steel Tank Institute third party 30-year Warranty. STI-P3 tanks comply with NFPA-30 and International Fire Code requirements. Concrete deadmen and straps are available.