20-Foot Open Top
Tarpaulin roof over a 20-foot frame for crane loading and over-height cargo.
Learn moreOpen-Top Containers
40-Foot Hard Top Open Top
Steel-roofed 40-foot open-top with a removable hard roof for crane loading and secure transit.
40 ft
Container overview
The 40-foot hardtop keeps the crane access of an open-top container while replacing the tarpaulin and bow set with a removable steel roof. The roof lifts off for top loading and bolts back down for transit, so the cargo travels inside a fully enclosed steel box.
The door header on most hardtop designs swings out, which increases the usable door opening for tall pieces that would otherwise foul the header. Machinery, glass, marble and long fabricated sections are common cargoes.
Also called40ft hardtop · hard top container · steel roof open top
Key features
- Removable steel roof for crane loading
- Swing-out door header on most designs for extra door height
- Lashing points rated for heavy and dense cargo
- Fully enclosed and lockable in transit
- Sourced on request against the project specification
Technical specifications
Inside dimensions
| Length | 39' 5¼" |
|---|---|
| Width | 7' 8⅛" |
| Height | 7' 10" |
| Floor area | 303 sq ft |
| Cubic capacity | 2,373 cu ft |
Outside dimensions
| Length | 40' |
|---|---|
| Width | 8' |
| Height | 8' 6" |
Door opening
| Width | See model drawing |
|---|---|
| Height | See model drawing |
| Other opening / feature | Removable steel roof |
Weights
| Tare weight | 10,362 lb |
|---|---|
| Maximum payload | Varies by manufacturer or model |
| Maximum gross weight | Varies by manufacturer or model |
Certification and identification
| ISO size/type code | 42U6 |
|---|---|
| ISO size group | Confirmed per unit |
| CSC information | Cargo-worthy units carry a valid CSC safety approval plate |
Container specifications may vary by manufacturer, production year and individual unit. Confirm the specifications of the assigned container before booking, loading or modifying the equipment.
Hardtop roof and door openings are configuration-specific.
Specifications last reviewed 2026-08-24. · Representative carrier specification. Reference specification
Condition and compliance
- New / one-trip units, subject to origin availability
- Used cargo-worthy units with valid CSC plating
- Specialty-certified equipment where the project requires it
Equipment moving on an international booking has to satisfy the applicable carrier, CSC, inspection, prefix, marking and documentation requirements before it is loaded. Wind and watertight condition describes weather protection only, and is a separate standard from cargo-worthy condition.
Common applications
- Project cargo
- Machinery and industrial equipment
- International freight
- Out-of-gauge shipments
Related containers
40-Foot Open Top
Full-length removable roof for long machinery and crane-loaded project pieces.
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40-Foot High Cube Hard Top Open Top
High-cube hardtop giving an extra foot of interior height plus removable steel roof access.
Learn moreNeed this container for your project?
Tell us what you are shipping, where the container is needed and when the project begins. Pro Box will help identify the appropriate equipment, condition and documentation requirements.