Adler Tank Rentals is proud to now be a part of IRONCLAD Environmental Solutions. Learn more about our expanded services.

21K Gallon Flat-Top Tank

★★★★★ ★★★★★
5 (2)
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Dimensions: 13 ft. 1 in. height x 8 ft. width x 51 ft. 6 in. length

Tare Weight: Approximately 28,000 lb.

Product Description

Designed for easy access to content, our heavy-duty 21,000 gallon (500 BBL) open-top tanks solve containment issues across a range of applications and industries:

  • Construction Dewatering
  • Sediment Control
  • Freshwater Storage
  • Drilling Projects
  • Plant Maintenance

Tanks are fitted with a front-mounted ladder well, facilitating the monitoring of fluid levels, pumping, and liquid treatment processes. The sloped bottom makes draining and cleanup fast and easy.

Mechanical Features

  • 3" top fill tube
  • (4) Standard 22" side hinged accessways
  • Multiple 4' valved fill/drain ports including floor level valves for low point drain out
  • 4" Vent
  • Sloped bottom for 100% drain out and easier cleaning after use
  • Smooth wall construction - no internal cross bracing
  • Front-mounted ladder well for top access
  • Fixed rear axle
  • Nose rail cut - out for easy access when installing hose and fittings on the front /bottom of the tank
  • Features open top for easy access to liquids being stored, pumped or treated
  • Full length catwalk equipped with safety rails and non-slip tread

Technical Specifications

  • Capacity: 21,000 gallons (500 BBL)
  • Dimensions: Approximately 13 ft. 1 in. height x 8 ft. width x 51 ft. 6 in. length
  • Tare Weight: Approximately 28,000 lb.

Download this PDF for a detailed list of specifications. Our 24-hour emergency service, expert support, and transportation services make us the partner you can count on. Call today to reserve your 21,000 gallon open-top tank for your next project. You can contact us at 800-421-7471 or click here to request a quote.

Safety Features

  • All tanks are equipped with non-slip step material on ladder wells and catwalks
  • All rails and catwalks are painted "safety yellow" for high visibility
  • Safe operation reminder decals are applied on risk areas such as steps, valves, and hatches


★★★★★ ★★★★★ 5 2 Reviews

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Average Customer Ratings

★★★★★ ★★★★★ 5
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★★★★★ ★★★★★

Great tank

Always use these for all kinds of industrial liquid storage.

Customer Service


Quality of Product

★★★★★ ★★★★★
Gus Maya

We have 3 others in teh plant, they work great.

This one is our 4th Adler tank, they have work very well for us.

Customer Service


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