QINGDAO BOXWELL CONTAINER CO. IS THE OFFICAL MANUFACTURING PARTNER OF BOXWELL LLC.
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20ft Demountable Self Storage Container with 4 Roller Shutter Doors
Qingdao Boxwell
The 20ft Demountable Self Storage Container with 4 Roller Shutter Doors features a knock-down modular design engineered for flat-pack transport and rapid on-site assembly.
By transporting units in compact bundles, this demountable configuration significantly maximizes shipping efficiency, reduces freight and warehousing costs, and enables easy handling in space-restricted locations prior to erection.
Equipped with four dedicated roller shutter doors, this model provides segregated, secure access to individual internal compartments.
The vertical roll-up design eliminates outward door swing clearance, maximizing usable space directly in front of the unit and allowing seamless operation along narrow aisles or boundary walls.
The multi-bay interior is structured to create distinct, lockable storage spaces within a single 20-foot footprint.
This partitioned layout allows operators to organize inventory and storage by:
● Individual customer
● Equipment category
● Inventory type
● Department
● Project
● Rental unit
Internal compartment dimensions and partitioning are fully customized based on project drawings.
Manufactured with a heavy-duty structural steel frame and high-grade galvanized steel panels, this container is built for long-term, weather-tight outdoor deployment. The durable construction provides robust protection against wind, rain, dust, and atmospheric corrosion.
The modular architecture allows storage facilities to be expanded, relocated, or reconfigured as operational demands evolve. This flexibility provides an agile, relocatable asset without the time and expense of permanent civil construction.
We offer end-to-end customization options, including:
● Dimensions
● Compartment layouts
● Door configurations
● Shelving systems
● Ventilation
● Exterior colors
● Branding
● Security upgrades
The 20ft Demountable Self Storage Container with 4 Roller Shutter Doors is intended primarily for commercial and modular storage applications rather than ISO intermodal cargo transportation.
Ideal for self-storage yards and mini-storage parks requiring multi-door rentable units. The independent four-bay setup allows facility managers to maximize rental revenue per square foot.
Provides extra on-site inventory, archive, and supplies storage for commercial hubs, retail centers, and logistics depots.
Enables rental operators to segregate and secure distinct toolsets, machinery, and equipment categories behind individual roll-up access points.
Serves as secure, relocatable job-site tool cribs and material depots that can be easily dismantled and transported to the next project phase.
Offers secure, weather-protected overflow storage for seasonal inventory, packaged stock, and commercial merchandise.
Provides partitioned on-site storage for factory consumables, spare parts, maintenance gear, and raw materials.
Optimized for flat-pack container delivery, rapid field erection, and flexible relocation across changing client sites.
Specification | Details |
Product Name | Foldable Self Storage Container with Rollup Doors |
Technical Model Name | 20ft Demountable Self Storage Container with 4 Roller Shutter Doors |
Brand | Boxwell |
Product Category | Storage Container |
Subcategory | Roller Shutter Door Storage Container |
Nominal Configuration | 20ft |
Structure Type | Demountable / Knock-Down Modular Structure |
Door Type | Roller Shutter / Roll-Up Door |
Door Quantity | 4 Independent Roller Shutter Doors |
Storage Arrangement | Separate Storage Compartments |
Main Material | Galvanized Steel |
Frame | Heavy-Duty Structural Frame |
Primary Use | Self-Storage and Commercial / Industrial Storage |
Compartment Layout | Customizable |
Door Configuration | 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 dedicated manufacturing base for Boxwell's global supply chain, leveraging extensive experience in modular self-storage units, portable warehousing, and custom storage products.
Founded in May 2020 in Jiaozhou, Qingdao, our modern manufacturing base spans approximately 60,000 m², including 32,000 m² of workshop space, operated by over 200 skilled manufacturing specialists.
We engineer and manufacture an extensive portfolio of purpose-built storage solutions, including:
● 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
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 complete build-to-print manufacturing and full in-house CAD/3D development, tailored precisely to facility layouts, specific compartment dimensions, and security requirements.
Our quality management system covers:
● Raw material inspection
● Production-process monitoring
● Final product testing
● Testing equipment for product verification
We provide integrated service across all stages:
● Pre-sales technical consultation
● Engineering design
● Production monitoring
● Quality control
● Logistics and shipment coordination
● After-sales technical support
It is a 20-foot knock-down modular self-storage container equipped with four independent roller shutter doors, designed for flat-pack transport and rapid assembly on-site.
This standard model is fitted with four independent roll-up doors, each providing direct access to its own partitioned storage compartment.
Roller shutter doors open vertically into an overhead canister, eliminating outward door swing. This maximizes usable ground space, improves security, and allows easy operation in narrow aisles or tight driveways.
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 is built with a heavy-duty structural steel frame and high-grade galvanized steel wall/roof panels to ensure maximum weather resistance and long-term anti-corrosion protection.
The unit is shipped in a compact demountable flat-pack bundle to minimize ocean and inland freight costs. It is assembled on-site using standard hardware, guided by our comprehensive assembly manual.
Assembly can be conducted with standard manual tools and forklifts or light lifting gear depending on the component sizes and on-site handling conditions.
Yes. The modular design allows units to be positioned side-by-side or end-to-end to create scalable self-storage parks and storage facilities.
To receive an accurate technical proposal and quotation, please provide:
● Required quantity
● Overall size requirements
● Required number of compartments
● Compartment dimensions
● Roller shutter door requirements
● Shelving requirements
● Ventilation requirements
● Color
● Branding
● Security requirements
● Delivery destination
● Site or assembly requirements
