This frp-jacketed steel tank is truly in a class by itself. STI members call it the fiberglass tank with a heart of steel.

• First tank system to demonstrate the ability of its interstice to communicate liquid leaks of 0.1 gal/hr (the leak detection rate referenced in US EPA regulations) -- verified by a third-party test lab.

• Combines the structural strength and fuel compatibility of steel with the corrosion resistance of fiberglass.

• 30-Year warranty against internal and external corrosion (call for details). UL 58 or UL 1746-Part III labeled.

• Built to nationally-recognized STI standards with strict third-party quality control inspection program.

• Capacities range up to 50,000 gallons.

• Customized compartments can be provided for cost-effective multi-product storage.

Permatank ships from the factory with a vacuum drawn on the interstice - ensuring the tank is tight when delivered.

Interstitial sensor is included with every Permatank!