Hover to magnifyThree-quarter exterior, doors closed
20ft Site Office — Two-Room Turnkey Conversion
SKU MG-20MOD-OFF2 · Held at Johannesburg, Gauteng
A 20ft one-trip unit converted in our Johannesburg fabrication shop into a two-room site office: a main office and a lockable private room or store separated by a stud partition and internal door. The fit-out includes a personnel door with a security gate, two windows with burglar bars, insulation and lined walls and ceiling, vinyl flooring, LED lighting, plug points on a distribution board with earth leakage, an external weatherproof inlet and a wall-mounted air-conditioner sized for Gauteng summer conditions. Electrical work is completed to SANS 10142 and handed over with a certificate of compliance for the unit. The office arrives ready to place on a level surface and connect; no site building work is required beyond levelling and a supply point. Because it remains a standard 20ft ISO unit externally, it can be relocated between sites on ordinary container transport for the life of the project. Delivered nationwide on kilometre-rated freight.
- Physically held and graded at our depot before listing
- Documentation pack issued with every delivery
- Delivered freight quoted to your postal code
- Net 30 terms available on approved trade accounts
The shell is fabricated from Corten A weathering steel — a copper, chromium and nickel alloy that forms a tightly adherent oxide layer instead of the flaking scale you get on mild steel. That patina slows further corrosion, which is why a 25-year-old box can still be structurally sound while a painted mild-steel shed of the same age has perforated.
Side and end panels are 14-gauge (2.0mm) corrugated sheet welded to a rigid frame of rolled top and bottom rails with cast steel corner fittings on the ISO 1161 pattern. Roof panels are 2.0mm with an arch profile that shifts standing water toward the eaves. Flooring is 28mm marine-grade plywood over steel cross-members on nominal 300mm centres, rated for a 7 260 kg forklift axle load.
Expect surface oxidation on used grades: it is cosmetic. We reject units with through-plate pitting, cracked welds at the corner posts, or bowed rails, because those defects affect stacking strength and cannot be repaired economically in the field.
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Availability is shown qualitatively. Exact depot allocation is confirmed by a specialist when your quote is issued, because units move between customer holds daily.