F921® is a double-wall aboveground storage tank, providing an economical solution for storage needs and extreme versatility in design: cylindrical, rectangular, horizontal or vertical.

Key Features:

  • Both primary tank and secondary containment outer tank are UL-142 labeled.
  • Safe secondary containment manufactured without the cost and/or weight of concrete insulation.
  • Secondary containment can be tightness-tested on-site with standard testing procedures.
  • Interstitial leak detection capability.
  • Emergency vent opening.
  • Alternative fuels-compatible.
  • Capacities range up to 50,000 gallons.
  • Can be used in place of diking or remote impounding for tanks 12,000 gallons or less (per EPA and NFPA).
  • Customized compartments can be provided for cost-effective multi-product storage.
  • Built to nationally-recognized STI standards with strict third-party quality control inspection program.