QINGDAO BOXWELL CONTAINER CO. IS THE OFFICAL MANUFACTURING PARTNER OF BOXWELL LLC.
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20ft Demountable Self Storage Container with 4 Doors
Qingdao Boxwell
The 20ft Foldable Self Storage Container with 4 Swing Doors uses a Self storage structure that can be transported in a compact package and assembled after delivery.
Reduced transportation and storage costs, improved shipping efficiency, quick on-site assembly and flexible deployment are key benefits of the demountable design.
This makes the product particularly suitable for storage operators that need to deliver multiple units to a new or expanding site.
fodable design construction uses the general principle of packing structural sections and wall components together for transportation before final assembly, helping reduce transport volume and support easier deployment.
A defining feature of this model is its four independent roller shutter doors.
Each door provides access to a separate storage section, allowing multiple users or storage categories to access their assigned compartments independently. This configuration improves convenience, security and space utilization.
The four-door arrangement supports multiple independent storage compartments within one 20ft unit.
This makes the product suitable for self-storage projects where the operator wants to divide one overall structure into separately accessible storage spaces rather than providing one large shared interior.
The final number, size and arrangement of compartments should follow the approved customer drawing.
This type of access can be useful where operators want to reduce the clear space required in front of individual storage doors.
Improved space utilization is one of the advantages of the roll-up door configuration.
The product is manufactured from high-quality galvanized steel with a heavy-duty structural frame and is designed for long-term outdoor storage applications.
The structure provides resistance to:
● Wind
● Rain
● Dust
● Corrosion
Specific wind ratings, corrosion classes or water-ingress ratings should only be stated where confirmed by the final technical specification.
The modular structure allows the storage units to be relocated, expanded or reconfigured as business requirements change.
This provides additional flexibility compared with permanent site-built storage facilities.
The product can be customized in areas including:
● Overall dimensions
● Compartment layouts
● Door configurations
● Shelving systems
● Ventilation
● Exterior colors
● Branding
● Security upgrades
Final specifications should be confirmed in the approved production drawings and commercial order.
The 20ft Demountable Self Storage Container with 4 Swing Doors is primarily designed for modular storage applications, rather than conventional ISO cargo transportation. it can be assemblyed within 15 mins from the flatpack condition to its finishing condition
Self-storage operators are one of the main applications specifically identified by Boxwell.
The four independent storage sections allow one overall unit to serve multiple users or rental compartments.
Commercial facilities can use the container for additional storage of packaged goods, business supplies, equipment or inventory.
The modular layout can be adapted according to the required compartment sizes and access arrangements.
Equipment rental companies are a suitable application.
Separate compartments can help organize different tools or equipment categories while providing independent roller shutter access.
The container can also be used as temporary or relocatable storage for appropriate construction tools, equipment and project materials.
Construction sites are included in the application range.
Retail inventory is another suitable application.
The container can provide supplementary storage capacity where existing warehouse or retail back-room space is limited.
Industrial facilities can use the unit for appropriate tools, components, spare parts, consumables and packaged materials.
Optional shelving, ventilation and compartment configurations can be incorporated according to the project requirements.
Portable storage businesses are also a target application.
The demountable construction can support projects where storage capacity needs to be transported to a site and later relocated or reconfigured.
Specification | Details |
Product Name | Foldable Self Storage Container with Rollup Doors |
Model | 20ft Demountable Self Storage Container with 4 swing Doors |
Brand | Qingdao Boxwell |
Product Category | Storage Container |
Subcategory | Storage Container |
Nominal Configuration | 20ft |
Structure Type | Foldable /Demountable / Knock-Down Modular Structure |
Door Type | Roller Shutter /Swing door |
Door Quantity | 4 Independent Roller Shutter Doors |
Storage Arrangement | Separate Storage Compartments |
Main Material | Galvanized Steel/ Painted /Powder Coated |
Frame Structure | Heavy-Duty Structural Frame |
Primary Use | Self-Storage / Commercial / Industrial Storage |
Dimensions | Customized / According to Approved Drawing |
Compartment Layout | Customizable |
Door Configuration | Customizable |
Shelving System | Customizable |
Ventilation | Customizable |
Color | Customizable |
Branding | Customizable |
Security Upgrades | Customizable |
Depending on project requirements, the following documentation can be provided:
DNV-ST-E271 Certification
CSC Plate (Optional)
Third-Party Inspection Certificate
Welding Records
NDT Reports
Load Test Reports
Paint Inspection Reports
Dimensional Inspection Reports
User Manual
Packing List
Every offshore container passes through a complete manufacturing process under strict quality control.
We are the official manufacturing partner of Boxwell LLC.
Boxwell LLC is a Colorado-based supplier of warehousing and logistics equipment, making this manufacturing background directly relevant to storage-container products.
Our factory covers approximately 60,000 m², including around 32,000 m² of workshop space, with more than 200 workers.
Our Storage Container product range includes:
● Roller Shutter Door Storage Containers
● Swing Door Storage Containers
● Demountable Storage Containers
● Detachable Storage Containers
● Flatpack Storage Containers
● Foldable Storage Containers
● Mini Storage Containers
● Insulated Storage Containers
This allows storage projects to be configured around different access and modular requirements.
Our core engineering and R&D team has more than 20 years of industry experience in special containers, customized equipment solutions and related container engineering.
The experience figure refers to our professional team rather than the age of Qingdao Boxwell itself.
We support:
● Manufacturing from customer drawings
● Production according to technical specifications
● In-house non-standard product development
● Project-specific customization
This capability is particularly useful for commercial self-storage projects where compartment dimensions, door arrangements and accessories may differ between facilities.
Our quality-management process includes:
● Raw material inspection
● Production-process monitoring
● Final product testing
● Modern testing equipment for product verification
Our service scope includes:
● Pre-sales technical consultation
● Engineering and solution design
● Production monitoring
● Quality control
● Logistics and shipment coordination
● After-sales technical support
● Spare-parts and long-term service support
No specific warranty period should be stated unless confirmed in the quotation or contract for the individual order.
The product name is “Foldable Self Storage Container with rollup doors,” and the product model is: 20ft Demountable Self Storage Container with 4 Roller Shutter Doors.
The product uses a knock-down / demountable structure, so “Demountable Self Storage Container” is the safer technical name unless the approved drawing confirms a specific folding mechanism.
The unit has four independent roller shutter doors.
The four doors provide separate access to different storage compartments.
The roll-up door configuration improves:
● Convenience
● Security
● Space utilization
Because the door moves vertically, it also avoids the outward swing area required by conventional hinged doors.
Yes. We support customization of dimensions, compartment layouts, door configurations, shelving systems, ventilation, colors, branding and security upgrades.
The final compartment arrangement should be confirmed through the approved drawing.
The product uses high-quality galvanized steel with a heavy-duty structural frame.
Exact steel thicknesses and material specifications should be confirmed in the technical documentation for the ordered configuration.
The container is designed for long-term outdoor use and provides resistance to wind, rain, dust and corrosion.
However, specific wind-load ratings, waterproof classifications or corrosion test standards should only be claimed where they are documented for the final product.
The product enables quick on-site assembly, but a verified installation time is not specified.
Claims such as “assembled in two hours” or “ready in a few hours” should therefore not be used unless the installation method and labor requirement are confirmed for the specific order.
A certified stacking capacity is not specified for this model.
Stacking capability should not be claimed unless the approved structural design provides the relevant stacking load and installation requirements.
ISO, CSC or DNV certifications are not specified for this storage model.
The product belongs to:
Storage Containers → Roller Shutter Door Storage Container
It does not belong to ISO Shipping Containers or Offshore Containers.
Any certification required by a specific project should therefore be discussed and confirmed before production.
For an accurate quotation, it is recommended to provide:
● Required quantity
● Overall size requirements
● Required number of compartments
● Compartment dimensions
● Roller shutter door requirements
● Shelving requirements
● Ventilation requirements
● Exterior color
● Branding requirements
● Security requirements
● Delivery destination
● Site and assembly requirements
Our engineering team can then review the project and develop the final configuration according to customer drawings, technical specifications and project requirements.
