Fiber Glass Systems is a global manufacturer of fiberglass piping systems. Red Thread IIA piping systems are UL 971 listed for all UL identifiable fuels and applications. These piping systems are biodiesel and E85 compatible. The UL 971 listed double wall and single wall bonded entry/termination fittings are key components to meeting the State of California definition of a Class 1 System (Leak Prevention) and a less costly Series Piping layout. Fiber Glass Systems' Red Thread IIA piping system offers the Long-Term Solution for any underground fuel and is verified by a 30-year warranty.