20ft Open Top Containers
The 20ft open-top container features dimensions suitable for over-height cargo and is equipped with a removable tarpaulin roof to facilitate easy loading.
20ft Open Top Container Dimensions & Specifications
Shipping Containers of Southampton provides premium-grade 20ft open-top shipping containers for businesses that need flexible loading access and dependable industrial storage. These specialist containers are designed for cargo that exceeds the height limitations of standard units or requires loading by crane from above. They are widely used throughout the construction, engineering, agricultural, and manufacturing sectors across Hampshire and the South Coast.
Unlike conventional dry storage containers, open-top units feature a removable tarpaulin roof supported by detachable steel roof bows. This configuration allows easy access for lifting oversized cargo directly into the container using gantry cranes or HIAB equipment. Whether you need to buy shipping containers for permanent use or arrange short-term container hire, our Southampton depot maintains extensive stock availability for rapid dispatch.
Every unit supplied by Shipping Containers of Southampton is wind and watertight, structurally inspected, and suitable for secure industrial storage or freight movement. Export-ready containers are supplied with a valid CSC certification plate for international shipping compliance. Customers seeking the highest cosmetic and structural standards often choose one-trip containers, which arrive in the UK after completing only a single cargo journey from the manufacturer.
20ft Open Top Container Dimensions
Accurate sizing data is essential when transporting over-height machinery, fabrication equipment, generators, or engineering components. The following technical specifications outline the dimensions and payload limits of a standard ISO 20ft open-top container supplied by Shipping Containers of Southampton.
| Specification | Metric | Imperial |
|---|---|---|
| External Length | 6.096 m | 20 ft |
| External Width | 2.438 m | 8 ft |
| External Height | 2.591 m | 8 ft 6 in |
| Internal Length | 5.898 m | 19 ft 4 in |
| Internal Width | 2.352 m | 7 ft 8 in |
| Internal Height | 2.348 m | 7 ft 8 in |
| Roof Opening Length | 5.490 m | 18 ft |
| Roof Opening Width | 2.210 m | 7 ft 3 in |
| Tare Weight | 2,280 kg | 5,027 lb |
| Maximum Payload | 28,200 kg | 62,170 lb |
| Maximum Gross Weight | 30,480 kg | 67,197 lb |
The tare weight is the container’s empty weight before loading. Payload capacity represents the maximum safe cargo weight that can be transported. Open-top units supplied by Shipping Containers of Southampton include reinforced marine-grade plywood flooring engineered to handle concentrated point loads from industrial machinery and heavy engineering components.
Industrial Applications for Open Top Containers
The open-top design makes these containers suitable for specialist logistics operations where standard loading methods are impractical. Businesses throughout Southampton, Portsmouth, and the wider South Coast region regularly use these units for transporting:
- Industrial generators and compressors
- Boilers and fabrication equipment
- Agricultural machinery and plant equipment
- Steel framework and construction materials
- Heavy engineering components
- Out-of-gauge export freight
- Stone, timber, and awkward bulk cargo
Once the tarpaulin roof and support bows are removed, overhead cranes can lower cargo directly into position. This approach is particularly useful where forklifts cannot safely manoeuvre oversized freight through standard container doors.
For wider or side-loading cargo requirements, Shipping Containers of Southampton also supplies flat-rack containers and specialist transport units for oversized industrial freight.
Container Construction and Weather Protection
Although open-top containers feature removable roofs, they remain highly effective weatherproof storage solutions. The heavy-duty PVC tarpaulin roof system is tension-secured with reinforced fastening rails and locking mechanisms, creating a reliable wind and water-tight seal.
The container body itself is manufactured from corrosion-resistant Corten steel, providing excellent durability in exposed industrial and coastal environments. This makes open-top units particularly suitable for long-term outdoor storage in Hampshire and the surrounding regions.
Many customers combine open-top units with our container maintenance and repair guidance to maximise lifespan and maintain structural performance over extended operational use.
HIAB Delivery and Site Preparation
Shipping Containers of Southampton operates a FORS Silver-accredited delivery fleet providing professional container transport and placement services across the South Coast. Our HIAB-equipped vehicles allow precise on-site positioning without requiring separate crane hire.
We regularly deliver containers to commercial and industrial sites throughout:
Before delivery, customers should ensure the installation area is level, accessible, and capable of supporting the full loaded weight of the container. Recommended surfaces include:
- Concrete hardstanding
- Compacted gravel
- Tarmac surfaces
- Railway sleepers on stable foundations
Poor ground conditions can cause container twisting or frame distortion, commonly known as racking. This can affect door alignment and operational performance. Further preparation guidance is available in our article covering shipping container foundations.
20ft Open Top Container Sales and Hire
Shipping Containers of Southampton offers both container sales and flexible hire agreements to suit commercial project requirements. Businesses requiring permanent storage or export equipment often choose to purchase a 20ft open-top container outright in either new or used condition.
For temporary projects, seasonal operations, or short-term engineering work, our 20ft open-top container hire service provides cost-effective access to specialist equipment without significant capital investment.
Our experienced team helps customers select suitable units based on:
- Cargo dimensions and weight
- Site access restrictions
- Loading method requirements
- Storage duration
- Export compliance needs
- Budget and project timescales
Customers comparing alternative storage solutions can also explore our range of standard 20ft shipping containers, 40ft open-top containers, and 40ft storage containers.
Frequently Asked Questions
What is a 20ft open-top shipping container used for?
A 20ft open-top container is designed for cargo that cannot be loaded through standard container doors. These units are commonly used for heavy machinery, construction materials, boilers, generators, and oversized industrial equipment that requires crane loading from above.
Are open-top containers weatherproof?
Yes. The reinforced tarpaulin roof system creates a wind and watertight seal when properly installed. All containers supplied by Shipping Containers of Southampton are inspected to ensure reliable weather resistance and secure storage performance.
Can I hire an open-top container for short-term use?
Absolutely. We provide flexible hire agreements for construction projects, temporary industrial storage, and specialist freight operations. You can view our available container hire services for further information.
Do open-top containers come with CSC certification?
Export-ready units include a valid CSC plate, confirming compliance with international shipping safety regulations. This certification verifies the container's structural integrity for stacking and overseas freight movement.
What is the maximum payload for a 20ft open-top container?
The maximum payload capacity is approximately 28,200 kg, depending on the container's exact specification. This makes the unit suitable for transporting heavy engineering components and industrial machinery.
Do I need planning permission for a shipping container?
Planning requirements vary depending on location, intended use, and installation duration. Commercial sites often have different requirements from residential properties. You can review our guidance on shipping container planning permission for further information.