Forty feet of length at 10 ft wide is where a site office stops reading as a room with some desks in it and starts behaving like a proper office. There is enough run to carve out a main working area plus a separate meeting or drawing space, and still leave a clear route between the two. It turns up ready for a full team, with no second electrical fit-out to arrange.
Dimensions
- External: 12.2 × 3.05 × 2.75 m (40 ft 0 in × 10 ft 0 in × 9 ft 0 in)
- External width over the jacks: 3.18 m (10 ft 5 in) — the figure to plan access against
- Internal: 12 × 2.95 × 2.3 m (39 ft 4 in × 9 ft 8 in × 7 ft 7 in)
- Door opening: 0.89 m wide × 1.99 m high (2 ft 11 in × 6 ft 6 in)
How it is built and equipped
- Fixed-point jacklegs, so it levels itself on ground nobody has prepared
- Plastisol exterior: 9 mm plywood laminated with plastic-coated steel sheet
- Walls, ceiling and floor all insulated
- Textured and painted finish available on request
- Sealed vinyl flooring
- Wipe-clean textured vinyl-faced plasterboard wall linings
- 6 × aluminium windows; uPVC double glazing is an available upgrade
- Fluorescent strip lighting, 4 fittings
- 4 × double power points and a fitted consumer unit
- 3 × electric timed panel heaters
- Optional upgrade to a steel pedestrian door
- Optional security pack of window mesh or steel shutters
The fit-out is scaled to the length, not stretched to it
The common failure in a long portable cabin is that the specification from a shorter unit is simply carried over, and the far end ends up dim, cold and unused. Here the count goes up with the length: four light fittings and three timed panel heaters rather than the two or three you would get on a 24ft or 32ft cabin, so the end away from the door is as workable as the end beside it. Worth checking on any long cabin you are comparing, because it is not always the case.
Consider the glazing upgrade
Aluminium windows are the standard fit here. If the cabin is going to run through a winter, sits close to working plant, or is being used for meetings where people need to hear each other, the uPVC double glazing upgrade is the one option worth taking — it makes a genuine difference to both heat retention and noise, and on a 12 m cabin with six windows the glazing is a large share of the envelope.
Delivery, siting and cover
Delivery is free UK-wide, taking in Northern Ireland, the Isle of Man, Jersey and Guernsey, and no VAT is added at checkout, so the price shown is what you pay. A 12.2 m cabin is a long load: check the turning circle into the compound as well as the gate width, since length rather than width is what defeats a 40ft delivery on a tight urban site. The fixed-point jacklegs mean no slab and no groundworks, only firm standing under each leg, which is what lets a unit this size go onto a compound that has not been formally prepared. A HIAB or crane offload is agreed in writing ahead of the delivery date. Twelve months’ cover applies against structural defects and water ingress. Your statutory rights sit alongside that as separate entitlements: 14 days to change your mind under the Consumer Contracts Regulations 2013, and 30 days to reject the goods if faulty under the Consumer Rights Act 2015.
Related units
Still not enough floor? The 48ft x 10ft jackleg office cabin runs longer again and carries uPVC double glazing as standard. Going the other way, a tighter compound is usually better served by the 32ft x 10ft jackleg plastisol office cabin, or by the entry-level 16ft x 10ft site office cabin. Desks, seating and filing to furnish whichever you choose come from cabin accessories; the rest of the family is in the site cabin range.
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