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STI F921 Fuel Tank

STI F921 fuel flameshield tank

Flameshield Fuel Tanks

STI F921 Certified Fuel Tanks

The STI F921 Flameshield Tank is a trusted above ground fuel tank designed for the safe storage of flammable and combustible liquids such as diesel and gasoline. Built to UL 142 standards, these STI-F921 double wall steel tanks provide dependable containment for a range of commercial and industrial fueling needs.


This tank meets the testing requirements of UL 2080 for built-in fire protection. Available in multiple sizes, the double wall fuel tank is ideal for use at construction sites, fleet yards, backup fuel systems, and more.


Looking for other bulk storage options? Please visit our Bulk Oil Storage Tanks page.

Flameshield Fuel Tanks Specifications


Capacity (Gal) Inner Tank Dimensions (in) Weight (lb) Download Drawing
300 38 x 60 775 Drawing
550 48 x 72 1200 Drawing
1000 48 x 132 2050 Drawing
2000 64 x 144 3750 Drawing
3000 64 x 216 5200 Drawing
4000 64 x 288 6574 Drawing
4000 96 x 132 7750 Drawing
6000 96 x 192 10120 Drawing
8000 96 x 256 12450 Drawing
10000 96 x 324 14500 Drawing
12000 96 x 384 17000 Drawing
15000 120 x 312 22000 Drawing
20000 120 x 408 28000 Drawing


Flameshield Fuel Tanks Details


The STI F921 Flameshield tank is a durable, all-steel solution for above ground storage of flammable and combustible liquids. It meets UL 142 requirements and includes the Flameshield® designation for added fire protection. The double wall design supports secondary containment standards and is suitable for diesel, gasoline, petroleum fuels, and lubricant oils.


Offered in sizes up to 30,000 gallons, including popular 1000 gallon fuel tanks, these STI-F921 double wall steel tanks are ideal for industrial, commercial, and municipal use. Each tank comes with a gray primer finish and is ready for long-term performance in field applications like fleet fueling, equipment storage, or backup fuel systems.


Flameshield Fuel Tanks Benefits

flameshield for fuel and oil tank on truck trailer
  • Meets fire safety and fuel storage standards
  • Compatible with flammable liquid storage
  • Supports secondary containment compliance
  • Durable steel construction for outdoor use
  • Primed with protective gray coating

Flameshield Fuel Tanks Features


  • All-steel, above ground construction
  • Double wall design with Flameshield® listing
  • UL 142 labeled for flammable liquid storage
  • Compatible with diesel, gasoline, and oils
  • Available in sizes up to 30,000 gallons

Flameshield Fuel Tanks Applications


These above ground fuel tanks are commonly used in the field for storing diesel, gasoline, and other fuels where dependable access and safety compliance are required. Their double wall steel construction makes them well-suited for operations that demand reliable on-site fuel storage in remote or rugged locations.


  • Construction and equipment yards
  • Fleet fueling stations
  • Remote job sites
  • Backup generator fuel systems
  • Oil and gas field operations

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