Open Top High Cube 20ft Container: Ultimate Guide for Heavy & Oversized Cargo

When standard shipping containers fall short, the open top high cube container emerges as the indispensable solution for engineers and procurement specialists. Whether you are transporting massive industrial machinery, construction equipment, or bulk materials that exceed standard height limits, this container variant offers unmatched flexibility. In this guide, we dissect the technical advantages, precise dimensions, and smart procurement strategies for the 20ft high cube open top container, ensuring your cargo moves safely and efficiently.

What is an Open Top High Cube Container?

An open top container is a specialized shipping unit designed for cargo that cannot be loaded or unloaded through standard double doors. Instead of a solid steel roof, it features a removable top cover—typically a durable PVC tarpaulin or a hard canopy—secured by bow assemblies. The high cube designation means it offers an extra foot of internal height compared to a standard container, significantly expanding volumetric capacity.

Core Definition & Design

This container retains the robust steel frame and flooring of a standard unit but removes the roof structure. The tarpaulin roof is weather-resistant and can be easily rolled back or removed, allowing for top-loading via cranes, hoists, or forklifts from above. This design eliminates the need for awkward maneuvering of bulky items through end doors.

Open Top vs. Standard Container: The Key Differences

The 'Extra Foot' Advantage

The most significant difference is internal height. A standard 20ft container has an internal height of approximately 2.39 meters (7ft 10in). A 20ft high cube open top boosts this to about 2.69 meters (8ft 10in). This extra foot is critical for accommodating taller machinery, stacked items, or equipment with protrusions.

Floor Space vs. Volume

While floor space remains constant, cubic capacity changes dramatically. The high cube open top provides roughly 13% more internal volume than a standard height open top. For a procurement manager, this means fewer shipments and lower overall logistics costs when handling high-volume, lightweight cargo.

Common Uses for Open Top High Cube Containers

Ideal for Oversized & Over-Height Cargo

The primary application is for cargo that simply will not fit under a standard roof. This includes heavy industrial presses, large generators, and construction equipment like excavators or bulldozers with elevated cabs.

Transporting Industrial & Construction Equipment

Mining components, steel beams, and large molds are frequently shipped in open tops. The ability to crane-load directly into the container reduces handling time and damage risk.

Agricultural Machinery and Industrial Materials

Farming equipment such as tractors or combine parts often require the extra height. Similarly, industrial materials like large pipes, timber, or oversized crates benefit from the removable roof.

High Cube Open Top Container Dimensions

Below are the standard technical specifications for a 20ft high cube open top container, often found with DNV 2.7-1 certification for offshore use.

20ft High Cube Open Top Dimensions

• External Length: 6.06 m (20 ft)
• External Width: 2.44 m (8 ft)
• External Height: 2.59 m (8 ft 6 in)
• Internal Length: 5.90 m (19 ft 4 in)
• Internal Width: 2.35 m (7 ft 8 in)
• Internal Height: 2.69 m (8 ft 10 in)
• Door Opening Width: 2.34 m (7 ft 8 in)
• Door Opening Height: 2.59 m (8 ft 6 in)
• Tare Weight: ~2,300 - 2,500 kg
• Maximum Payload: ~28,000 kg
• Cubic Capacity: ~38.5 m3 (1,360 cu ft)

Note: Always verify exact weight and dimensions with the supplier, as certifications (DNV 2.7-1) may alter these figures.

Smart Procurement: How to Buy Open Top High Cube Containers

Purchasing specialized containers requires a strategic approach to avoid costly mistakes.

Step 1: Finalize Your Criteria

Determine the exact volume and weight of your cargo. Does it require DNV 2.7-1 certification for offshore safety? Is a tarpaulin roof sufficient, or do you need a hard-top cover? Matching cargo specs to container specs is critical.

Step 2: Search Offers on a Trading Platform

Use a global trading platform to browse inventory from vetted suppliers. Filter by 'Open Top', 'High Cube', and 'DNV 2.7-1' to narrow down options. Check supplier ratings and stock locations (e.g., Qingdao, Shanghai).

Step 3: Negotiate a Direct Deal

Contact suppliers directly. Ask about the tarpaulin grade (PVC weight is crucial), bow assembly condition, and floor condition. Negotiate inclusive shipping or inspection costs. Avoid middlemen when possible.

Step 4: Make Safe Payments

Use secure payment methods such as letters of credit (LC) or escrow services. Avoid wire transfers to unverified accounts. A deposit with a balance against shipping documents is standard.

Frequently Asked Questions (FAQ)

Can I use a standard high cube container for over-height cargo?

No, a standard high cube container has a fixed roof. Over-height cargo will not fit through the door opening, which is identical to a standard container's door height. You must use an open top or flat rack container for items taller than 2.59 m.

How durable is the PVC tarpaulin roof?

High-quality PVC tarpaulins, especially those used on containers with DNV 2.7-1 certification, are highly durable. They are UV-resistant, waterproof, and designed to withstand harsh marine environments and wind loads. They are not as puncture-proof as steel but are easily replaceable.

What is DNV 2.7-1 certification?

DNV 2.7-1 is a certification standard for offshore containers, ensuring they meet stringent safety requirements for lifting and transport on ships and offshore installations. It affects container construction (e.g., corner castings, lashing points) and is mandatory for use on most offshore platforms.

How do I inspect an open top container before purchase?

Request a video call or hire a third-party inspection agent. Critically check the tarpaulin for tears, the locking bars and hinges on the doors, the condition of the floor (no deep rot), and the state of the corner castings for lifting damage.

Conclusion

The open top 20ft high cube container is a vital asset for any logistics operation dealing with oversized, heavy, or awkward cargo. By understanding its unique dimensions—especially the extra internal height—and following a smart procurement process, you can secure a durable, cost-effective shipping solution. Whether you need a standard unit or a DNV-certified offshore container, prioritize quality and supplier credibility to protect your cargo investment.