QINGDAO BOXWELL CONTAINER CO. IS THE OFFICAL MANUFACTURING PARTNER OF BOXWELL LLC.
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20ft Demountable Self Storage Container with Swing Doors
Qingdao Boxwell
The 20ft Demountable Self Storage Container with Swing Doors is engineered as a modular knock-down storage unit rather than a conventional welded shipping container.
Its demountable structure allows container components to be flat-packed for transport, significantly reducing shipping volume, cutting logistics and handling costs, and facilitating easy delivery to space-constrained job sites.
This configuration is ideal for self-storage developments and commercial facilities requiring multi-unit bulk shipments.
A defining feature of this model is its four independent swing-door openings along the side wall.
Each door provides direct access to a dedicated internal storage compartment, enabling the unit to serve multiple independent users or separate distinct inventory categories within a single 20ft footprint.
Compared with conventional single-end opening containers, this multi-door setup delivers immediate, segregated access to all storage sections.
The interior is configured with integrated partition walls dividing the unit into four distinct, lockable storage compartments.
This layout provides secure, segregated storage suited for commercial self-storage facilities, rental operations, and businesses requiring organized compartmentalization.
Manufactured from high-quality galvanized steel with a heavy-duty formed structural frame, this unit is built for long-term outdoor deployment.
The durable construction provides robust resistance against wind, rain, dust, and atmospheric corrosion.
Unlike permanent masonry buildings, this modular structure allows storage capacity to be expanded, reconfigured, or relocated as operational requirements evolve.
This delivers flexible, scalable storage assets without the cost and lead time of permanent civil construction.
We provide full customization across all structural and functional parameters, including:
● Dimensions
● Compartment layouts
● Door configurations
● Shelving systems
● Ventilation
● Exterior colors
● Branding
● Security upgrades
The 20ft Demountable Self Storage Container with Swing Doors is engineered specifically for modular, commercial, and decentralized storage applications.
Provides dedicated multi-unit rentable bays within a standard footprint, maximizing rental yield per square meter for self-storage operators.
Supplies partitioned, lockable storage for business inventory, archival documents, operational supplies, and seasonal goods.
Enables rental companies to segregate and secure distinct toolsets, machinery, and equipment categories behind dedicated swing doors.
Serves as secure, weather-tight, and relocatable on-site storage for contractor tools, equipment, and building materials.
Offers organized on-site storage for spare parts, maintenance consumables, workshop tools, and industrial supplies.
Delivers flexible overflow storage capacity for retail stores, supermarkets, and commercial venues without requiring facility expansion.
Engineered for flat-pack deployment, rapid on-site assembly, and easy disassembly for relocation across dynamic project locations.
Specification | Details |
Product Name | Foldable Self Storage Container with Swing Doors |
Model | 20ft Demountable Self Storage Container with Swing Doors |
Brand | Qingdao Boxwell |
Product Category | Storage Container |
Subcategory | Swing Door Storage Container |
Structure Type | Demountable / Knock-Down Modular Structure |
Nominal Configuration | 20ft |
Door Type | Swing Doors |
Door Quantity | 4 Independent Swing Doors |
Internal Arrangement | Separate Storage Compartments |
Main Material | Galvanized Steel |
Frame | Heavy-Duty Structural Frame |
Primary Use | Self-Storage and Commercial / Industrial Storage |
Dimensions | Customized / According to Approved Drawing |
Compartment Layout | Customizable |
Shelving | Customizable |
Ventilation | Customizable |
Color | Customizable |
Branding | Customizable |
Security Configuration | 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.
Qingdao Boxwell Container Co., Ltd. serves as the official manufacturing partner of Boxwell LLC, delivering specialized engineering and production capabilities for modern warehousing, logistics, and self-storage equipment.
Founded in May 2020 in Jiaozhou, Qingdao, our production base covers approximately 60,000 m², including 32,000 m² of modern workshop space, operated by over 200 skilled workers.
We engineer and manufacture an extensive portfolio of purpose-built storage solutions, including:
● Swing Door Storage Containers
● Roller Shutter Door Storage Containers
● Demountable & Knock-Down Storage Containers
● Detachable Modular Units
● Flat-Pack Storage Containers
● Mini Storage Lockers & Partitioned Units
● Insulated Storage Units
Our core engineering and technical team brings more than 20 years of specialized experience in structural engineering, modular storage systems, and custom container fabrication.
We provide full build-to-print manufacturing from customer drawings as well as end-to-end custom design, tailored to specific site layouts, compartment dimensions, and security requirements.
We operate a comprehensive quality management system covering:
● Raw material inspection
● Production-process monitoring
● Final product testing
We provide integrated project services spanning pre-sales technical consultation, CAD layout engineering, production tracking, export packing, international logistics coordination, and ongoing technical support.
This product features a 20ft knock-down demountable design. It is shipped as a compact flat-pack package and assembled on-site with standard hardware to optimize transport efficiency and space utilization.
The standard model features four independent swing doors along the side wall, each providing separate access to its own partitioned storage bay.
Yes. While this model comes standard with heavy-duty swing doors, roller shutter doors can be configured upon request based on site clearance and customer preference.
The standard configuration utilizes a 20ft footprint divided into four equal storage compartments. Custom overall dimensions, compartment depths, and uneven bay divisions can be engineered to order.
Yes. We fully customize internal partition locations, overall dimensions, number of doors, internal shelving, ventilation louvers, exterior colors, and corporate branding according to your site plan.
The container components are assembled on-site using standard mechanical fasteners. Detailed step-by-step assembly instructions and component diagrams are provided with every shipment.
The unit is manufactured from high-grade galvanized sheet steel with a heavy-duty formed structural steel frame, delivering long-term anti-corrosion protection and weather resistance.
No product classification on the current page supports that description.
Boxwell places No. This product is designed specifically for modular self-storage and on-site commercial storage applications. For ISO multimodal transport or DNV offshore applications, our certified ISO and offshore container product lines should be selected.
To receive an accurate technical proposal and quotation, please provide:
● Required quantity
● Preferred overall dimensions and internal compartment layout
● Door configuration and hardware preferences
● Shelving, ventilation, or electrical accessory requirements
● Preferred finish (galvanized or painted RAL color) and branding details
● Delivery destination port or installation site
