Tunnel means doors at both ends. This 40ft x 8ft one trip tunnel container carries a full set of hinged cargo doors at each end instead of the usual single set, and that difference rewrites how the box works on the ground. Loading can happen at one end and collection at the other. Lengths of material pass clean through rather than being turned inside. Put a bulkhead across the middle and you have two halves that lock independently of one another.
Dimensions
- External: 12.19 × 2.44 × 2.59 m (40 ft 0 in × 8 ft 0 in × 8 ft 6 in)
- Internal: 12.00 × 2.35 × 2.39 m (39 ft 4 in × 7 ft 9 in × 7 ft 10 in)
- Door opening, each end: 2.34 m wide × 2.28 m high (7 ft 8 in × 7 ft 6 in)
- Maximum gross weight: 30 tonnes
Build and fittings
- New, one trip only — a single loaded ocean voyage
- CSC plated to a 30 tonne maximum gross weight
- All Cor-Ten steel construction
- Exterior hinged double doors at each end
- Each door carries two locking bars
- Factory fitted lockbox at each end
- Two forklift pockets on each side
- 28 mm marine plywood floor on steel cross members
- Four vents fitted
Two doors, two lockable halves
The partitioning use is the one that sells most tunnel containers, and it is worth spelling out. Fit a bulkhead at the midpoint and you have two independent 20ft stores, each with its own doors and its own factory-fitted lockbox, sharing one foundation and one delivery. For a site with two contractors, two departments or a landlord and a tenant, that is materially cheaper and tidier than two separate containers.
The pass-through use matters for anyone handling length. Pipe, timber, steel section and ducting cannot be turned inside a 2.35 m wide box, so with a single door you are limited to what will fit diagonally. With doors at both ends a forklift drives in one side and out the other, and a 12 m length can be loaded end to end.
What people use them for
- Storage that has to be reached from two directions — drive-through and pass-through working
- Running one container as two secure compartments, each with a lockbox of its own
- Pipe, timber and steel section: lengths that will never turn inside a single-door box
- Workshop and event conversions where people and stock must flow through, not double back
Delivery, siting and cover
UK delivery is free, taking in Northern Ireland, the Isle of Man, Jersey and Guernsey, and the listed price is the total payable with no VAT added at checkout. Orientation deserves a moment’s thought at this length: with doors at both ends, both need clear working space, so a 40ft tunnel wants roughly 3 m of open ground beyond each end rather than being pushed against a wall. Tell us your preferred door orientation when you order. A 40ft delivery needs a clear straight run of about 25 m and firm, level standing; HIAB or crane offload is agreed in writing before delivery.
As a one trip unit it carries our 12-month warranty against structural defects and water ingress, covering both sets of door gear as well as the panels, underframe and floor structure. Separately, you have 14 days to change your mind under the Consumer Contracts Regulations 2013, and a 30-day right to reject the goods if they are faulty.
Other double-door and tunnel units
Where 40ft is more footprint than a site can give up, the 20ft tunnel container with double end doors repeats the arrangement at half the length. For a shell already converted, look at the 40ft tunnel container mobile workshop. Colour and door orientation are specified on the quote request page; the rest of the range is in the shipping container category.
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