20-Foot Standard Dry Van
The baseline export unit for dense, palletized and general cargo on international bookings.
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ISO Tank
Stainless steel pressure vessel inside a 20-foot frame for liquids and gases.
20 ft
Container overview
An ISO tank container is a stainless steel pressure vessel mounted inside a 20-foot steel frame with standard corner castings, so it handles and stows like any other 20-foot unit. Nominal capacity generally falls between 24,000 and 26,000 litres depending on the build.
Tanks carry chemicals, food-grade liquids, fuels and gases. Commodity approval, tank cladding, heating arrangements, valve configuration and hazardous-goods documentation all depend on the product being moved.
Pro Box sources tank equipment on request. Suitability is confirmed against the specific commodity, the trade lane and the applicable regulatory requirements before a booking is placed.
Also calledtank container · ISO tank · T11 tank
Key features
- Stainless steel pressure vessel in a 20-foot ISO frame
- Nominal capacity of roughly 24,000 to 26,000 litres
- Top and bottom valve arrangements depending on the build
- Optional heating and insulation configurations
- Commodity approval confirmed per tank
- Sourced on request rather than held as stocked inventory
Technical specifications
Inside dimensions
| Length | Tank-specific |
|---|---|
| Width | Tank-specific |
| Height | Tank-specific |
| Floor area | Not applicable — tank equipment |
| Cubic capacity | 6,340 to 6,868 US gallons |
Outside dimensions
| Length | 20' |
|---|---|
| Width | 8' |
| Height | 8' to 8' 6" |
Door opening
| Width | Tank-specific |
|---|---|
| Height | Tank-specific |
| Other opening / feature | Cylindrical tank within ISO frame |
Weights
| Tare weight | 7,850 lb |
|---|---|
| Maximum payload | 71,510 lb |
| Maximum gross weight | 79,360 lb |
Certification and identification
| ISO size/type code | 20KL / 22KL |
|---|---|
| ISO size group | 22 (20 ft × 8 ft 6 in) |
| CSC information | Cargo-worthy units carry a valid CSC safety approval plate; tank test certification is confirmed per unit |
Container specifications may vary by manufacturer, production year and individual unit. Confirm the specifications of the assigned container before booking, loading or modifying the equipment.
Capacity and tare depend on tank type, pressure rating, and commodity service.
Specifications last reviewed 2026-08-24. · Tank-specific. Reference specification
Condition and compliance
- Certified tank equipment matched to the commodity
- Inspection and test certification confirmed per unit
- Hazardous-goods documentation where the commodity requires it
Equipment moving on an international booking has to satisfy the applicable carrier, CSC, inspection, prefix, marking and documentation requirements before it is loaded. Wind and watertight condition describes weather protection only, and is a separate standard from cargo-worthy condition.
Common applications
- Chemical and industrial liquids
- Food-grade liquid freight
- Fuels and gases
- Project support
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Need this container for your project?
Tell us what you are shipping, where the container is needed and when the project begins. Pro Box will help identify the appropriate equipment, condition and documentation requirements.