Description
The 20ft Custom Shipping Container Conversion from Atlas Container Supply is a durable, wind- and watertight steel unit engineered for secure, long-lasting performance.
This 20ft custom shipping container conversion is a new, built-to-order modular building constructed on a 20ft COR-TEN anti-corrosive steel container base — available in standard height (8ft 6in) or high cube (9ft 6in) — and fully configured to your specification before dispatch. The pictured example is finished in Anthracite Gray externally and white internally, fitted with chrome container handles, a manual roller shutter door, double-glazed anthracite gray French doors, a large fixed glazed panel, and a high-line opening ventilation window. Every element of this build can be adapted — door placement, glazing configuration, interior lining, insulation spec, and finish color are all specifiable at time of order.
Access on the pictured example is via two separate openings. The manual roller shutter door (2,000 × 1,000mm) is a powder-coated steel shopfront-style shutter secured with bullet locks — suited to retail service counters and storage access. The double-glazed French doors (2,000 × 2,200mm) in anthracite gray provide a full-height glazed entry point for staff and customers, with a clean, contemporary appearance suited to studios, offices, and hospitality units. The fixed large double-glazed window panel (2,100 × 2,200mm) floods the interior with natural light, and the high-line opening window (1,800 × 400mm) provides passive ventilation above head height.
The interior base build includes an insulated floating floor system as standard, providing thermal separation between the container steel base and the finished floor surface. Wall and ceiling insulation, electrical installation, climate control, plumbing, interior finishes, and branding or cladding upgrades are all available as additional packages — specify your requirements at time of order and we will provide an itemised quotation for your full build.
For guidance on container conversion planning permissions and building regulations in the USA, refer to the International Code Council building standards reference.
20ft Custom Container Conversion — Dimensions
| Dimension | Standard Height | High Cube |
|---|---|---|
| External Length | 20ft (6,058mm) | 20ft (6,058mm) |
| External Width | 8ft (2,438mm) | 8ft (2,438mm) |
| External Height | 8ft 6in (2,591mm) | 9ft 6in (2,896mm) |
| Internal Length (est.) | 19ft 4in (5,898mm) | 19ft 4in (5,898mm) |
| Internal Width (est.) | 7ft 8in (2,352mm) | 7ft 8in (2,352mm) |
| Internal Height (est.) | 7ft 10in (2,393mm) | 8ft 10in (2,698mm) |
Internal dimensions are pre-lining estimates. Finished internal clearances will be reduced by insulation and wall lining packages selected — confirm exact finished dimensions with Atlas Container Supply at time of order.
As-Shown Build — Example Specification
| Item | As-Shown Specification |
|---|---|
| Base Container | 20ft standard or high cube — specify at order |
| Exterior Finish | Anthracite Gray full external respray |
| Interior Finish | White internal respray |
| Hardware | Chrome container handles |
| Roller Shutter | Manual, 2,000 × 1,000mm, powder-coated, bullet locks |
| French Doors | Double-glazed anthracite gray, 2,000 × 2,200mm |
| Fixed Glazed Panel | Double-glazed, 2,100 × 2,200mm |
| Ventilation Window | High-line opening, 1,800 × 400mm |
| Floor | Insulated floating floor system |
Available Customisation Options — Specify at Order
- Wall and ceiling insulation packages
- Electrical installation — lighting, outlets, and breaker panel
- Climate control — air conditioning and heating units
- Plumbing connections — optional sink or washroom setup
- Interior finishes — vinyl plank flooring, painted panels, custom trim
- Branding, signage, and cladding upgrades
- Alternative door and window configurations
- High cube base container upgrade
What’s Not Included Unless Specified
- Wall and ceiling insulation (floating floor only as standard)
- Electrical installation and consumer unit
- Air conditioning or heating units
- Plumbing or drainage
- Mains electrical or water connection on site
- Site preparation or foundation works
- Crane or lifting equipment
- Furniture or internal fit-out beyond specified finishes
- Local authority planning or building permits
Best Use Cases for a 20ft Custom Container Conversion
- Retail kiosk or food service counter with roller shutter service opening
- Pop-up shop, market stall, or event booth
- Garden studio or home office with full-height glazing
- Construction or project site office
- Hospitality or modular accommodation unit
- Brand activation space or product showroom
Also available: 8ft Custom Shipping Container Store, 10ft Cladded Food & Drink Outlet Container, and 20ft Container Home Office.
Every unit is inspected by Atlas Container Supply prior to dispatch.
20ft Custom Shipping Container Conversion Overview
The 20ft Custom Shipping Container Conversion combines rugged construction with everyday practicality, making it a smart long-term investment. Supplied in new condition, it arrives quality-inspected and ready for immediate use across residential, commercial, and industrial applications.
Key Features of the 20ft Custom Shipping Container Conversion
- Built to Order
- Anthracite Gray
- French Doors & Roller Shutter
- Fitted with electrics, lighting, insulation and windows
- Lockable personnel door for security
20FT Specifications
- External dimensions: 20′ × 8′ × 8′6″
- Floor area: ~160 sq ft
- Internal volume: ~1,170 cu ft
- Construction: Corten (weathering) steel, wind & watertight
- Condition: New
Ideal Uses
The 20ft Custom Shipping Container Conversion is a versatile container office suited to a wide range of jobs, including:
- Construction site offices and command posts
- Backyard studios and home offices
- Remote workspaces and break rooms
- Modular classrooms and clinics
Construction & Durability
The 20ft office unit is built from factory-fresh one-trip steel — corrugated Corten panels that weather to a stable oxide layer instead of rusting through. Corner castings are forged and welded to the rails, so it can be lifted, stacked, and relocated without the frame racking out of square.
Delivery & Site Preparation
We ship the 20ft office unit across the Lower 48 on a tilt-bed at no charge to you. Allow about 75ft of clear, straight approach so the bed can tilt and slide the unit off. Have the drop zone marked and clear on the day — the driver sets it once, and moving it afterwards means another truck.
Why Buy From Atlas Container Supply
Buying new means you see no wear at all: no dents, no patch welds, no previous cargo. We inspect, then we list — no surprises on delivery day, and 30 days to return it if it is not right. More options in Container Home Office and the full container shop.
20ft Custom Shipping Container Conversion – Frequently Asked Questions
What can I use it for?
This unit is ideal for construction site offices and command posts, backyard studios and home offices, and more — it adapts easily to residential, commercial, and industrial needs.
Is delivery included?
Delivery is free to the Lower 48 — it is included in the price. What you need to supply is the pad and a clear approach; we bring the truck and place the unit.
Can I return it?
This is a custom-built or modified unit. Under our refund and returns policy custom-built and modified units are non-returnable, so please confirm the specification with us before you order. Every unit is inspected before dispatch.
Ready to order? Add the 20ft Custom Shipping Container Conversion to your cart today and enjoy quality-inspected stock, secure checkout, and reliable delivery across the Lower 48 from Atlas Container Supply.
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