20ft High Cube Container

20ft High Cube Container: Master Specification & Procurement Guide

This comprehensive reference establishes the critical structural parameters, material configurations, and regulatory compliance criteria required for the commercial procurement of 20-foot High Cube shipping containers optimized for intermodal logistics and industrial static storage.

Technical Specifications

Parameter	Specification
External Dimensions	Length: 6,058 mm (20 ft) Width: 2,438 mm (8 ft) Height: 2,896 mm (9 ft 6 in)
Internal Dimensions	Length: 5,898 mm Width: 2,352 mm Height: 2,698 mm
Door Aperture	Width: 2,340 mm Height: 2,585 mm
Cubic Capacity	Approx. 37.4 m3
Tare Weight	Approx. 2,300 kg – 2,400 kg
Max Gross Mass (CSC)	30,480 kg (Standard ISO Rating)
Max Payload	Approx. 28,100 kg
Steel Material	Corten-A weathering steel (SPA-H) for frame and panels
Floor Construction	28 mm marine-grade apitong/hardwood plywood on steel cross members
Corner Castings	ISO 1161 drop-forged steel
Compliance	ISO 668, ISO 1496-1, CSC Safety Approval

Dimensional Comparison: Standard vs. High Cube

Metric	20ft Standard Dry Container	20ft High Cube Container
External Height	2,591 mm (8 ft 6 in)	2,896 mm (9 ft 6 in)
Internal Height	2,390 mm	2,698 mm
Vertical Clearance Advantage	Baseline	+308 mm (~12 inches)
Cubic Volume	~33.2 m3	~37.4 m3
Floor Footprint	6.06 m x 2.44 m	6.06 m x 2.44 m

Critical Procurement Parameters

Structural Steel & Corrugated Panels
Material Grade: Frame and panels utilize Corten-A (SPA-H) structural weathering steel, engineered to deliver superior resistance against atmospheric corrosion in marine and industrial environments.

Thickness Tolerances: Standard configuration features 2.0 mm corrugated side/roof panels and robust 4.0 mm to 6.0 mm structural frame members (corner posts and cross rails). Verify exact gauge thresholds during engineering contract reviews.

Flooring and Concentrated Load Limits
Material: 19-ply marine-grade hardwood plywood (typically Apitong or Keruing) treated specifically for high moisture and insect resistance.

Load Rating: Standard industrial floors support forklift axle loads of up to 7,260 kg per 2-wheel set over a contact area of 142 cm x 85 cm. Evaluate standard 28 mm flooring thicknesses carefully against heavy, concentrated machinery applications.

Surface Preparation and Coating System
Surface Treatment: Minimum Sa 2.5 abrasive blast cleaning executed prior to chemical coating application to guarantee proper bonding.

Paint Schedule: Heavy-duty marine coating system consisting of an epoxy zinc-rich primer, an intermediate build coat, and a durable polyurethane topcoat (ensuring a total dry film thickness >= 120 um). Specify precise RAL color codes upon order confirmation.

Regulatory Compliance & Certification
CSC Plate: Mandatory for all intermodal transport units. Clearly displays maximum gross weight, stacking test load (typically 192,000 kg evaluated for corner posts rated at 2 high), and structural racking test values.

Classification Society: Units can be accompanied by formal inspection certification from recognized international classification societies (e.g., ABS, BV, DNV, LR) upon request.

Request A Quotation

To accelerate your inquiry and receive a precise commercial proposal, please provide the following parameters:

Compliance:

CSC certified for international shipping vs. stationary static storage requirements

Modifications:

Standard dry cargo shell or custom engineering (e.g., additional personnel doors, high-security lockboxes, custom lashing rings, specialized ventilation)

Quantity:

(e.g., 10 / 50 / 100+ units)

Condition:

One-trip (New) / Cargo-worthy (Used) / WWT (Wind & Water Tight)

Destination:

Port or final delivery site (City/Country)

FAQ

Q: What is a 20ft High Cube Container?

A: A 20ft High Cube Container is a 20-foot Series 1 freight container engineered with greater external and internal height than a standard 20ft dry container. This vertical expansion increases overall cubic capacity while maintaining a standard 20-foot floor footprint.

Q: How much taller is a 20ft High Cube than a standard 20ft container?

A: The nominal external height reaches approximately 9 ft 6 in for a High Cube, compared to approximately 8 ft 6 in for a standard-height container, providing an additional 308 mm of vertical clearance.

Q: What is the internal volume of a 20ft High Cube?

A: A typical 20ft High Cube provides roughly 37.4 m3 of internal cargo volume, varying slightly depending on exact manufacturing tolerances and internal lining specifications.

Q: Is a 20ft High Cube suitable for international shipping?

A: Yes, provided the container is manufactured, tested, and certified for international transport applications and carries valid safety approval documentation. CSC guidelines govern the rigorous testing, inspection, approval, and ongoing maintenance of intermodal units.

Q: What is the difference between payload and volume?

A: Volume defines the physical space available inside the container for loading cargo. Payload refers to the physical weight of cargo that can be safely loaded within the container's rated maximum gross mass. A High Cube expands spatial volume, but it does not increase the structural maximum payload limit.

Q: Can a 20ft High Cube be used for storage?

A: Yes. It is heavily utilized for secure, enclosed storage of construction materials, tools, industrial components, inventory, and field equipment. Static storage deployments should evaluate site-specific factors regarding ventilation, internal condensation control, ground leveling, and localized corrosion prevention.

Q: Can the container be customized?

A: Yes. Tailored configurations can include secondary personnel doors, specialized ventilation louvers, high-security lockboxes, thermal insulation, integrated electrical packages, modular shelving, modified flooring systems, corporate branding, and other project-specific options. All heavy structural alterations should undergo structural review prior to fabrication.

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