40 ft Office · Double Room

What are the dimensions of a 40 ft (12 m) 40 ft Office · Double Room?

The table below reproduces ISO 668:2020, Table 2 and Table 3. These are the standard's figures, not a measurement of an individual unit. External dimensions are fixed for series 1 because the box has to drop into ship cells, sit on a chassis and stack. The 2438 mm width applies to every series 1 container without exception. The internal figures are the minima the standard requires rather than typical actuals, so a real unit is usually a little roomier. The standard derives minimum internal height as the nominal external height minus 241 mm. If you need dimensions after lining or insulation, those depend on the build-up chosen and are confirmed on the shop drawings before steel is cut. Tolerances on the external dimensions come from the same table and are deliberately tight, because the box has to keep fitting a ship cell years into service. Lifting, stacking and racking tests are covered by ISO 1496-1, and marking plus the check digit by ISO 6346. Corner castings are forged to ISO 1CC and carry the entire stack load, which is why they are measured on a FARO Arm Prime 10 during production.

How much weight can a 40 ft Office · Double Room carry?

The rating R under ISO 668:2020, Table 2, is 30 480 kg. That is the total mass of the container plus its cargo, not the payload on its own. Clause 5.2.2 of the standard permits higher values for particular traffic, provided the unit is tested and marked to its actual rating R, up to a ceiling of 36 000 kg. That is where the higher figures seen around the market come from: a permissible higher rating for a specific unit, not the standard's figure. The binding number is always the one on the CSC plate. Tare and payload are not published here because they vary unit to unit and the standard does not define them. Stacking capacity and floor loading are separate figures and do not follow from R. For a unit in service the maintenance regime matters too: periodic examination at fixed intervals, or an approved continuous examination programme. If you need a higher R for a particular route, that is settled at engineering review before production rather than afterwards.

What should you check before buying a 40 ft Office · Double Room?

Check the CSC plate first: validity, the rating R and whether the unit runs under periodic examination (PES) or an approved continuous programme (ACEP). Without a valid plate it cannot move in international transport. Then inspect the corner castings and the frame, because those carry the stacking and lashing loads and are far more expensive to repair than the skin. Look at the floor from underneath, not just from inside: cross members and bottom rails corrode long before the plywood does. Check the door gaskets and whether the doors seat all the way round. Buying used, ask for the grade and photographs. Buying new, ask for the surface preparation record and the paint system. Check the coating system as well: surface preparation to Sa 2.5 under EN ISO 8501-1 and the corrosivity class under EN ISO 12944 decide how long the unit lasts outdoors. Standard finishes are RAL 5010, 6005, 7016, 9005 and 1015, with other shades on request. Hot-dip galvanising is available for external components.

How long is the lead time for a 40 ft Office · Double Room?

Lead time is 10 to 16 weeks. Catalogue items run 6 to 10 weeks and custom builds 10 to 16 weeks. Framework agreements hold an agreed lead time and call-offs run against it. The default delivery term is EXW Bánovce nad Bebravou, with DAP or DDP on request. On handover you receive the CMR, the CSC plate and multilingual manuals. Quotations are typically issued within 3 to 5 working days of a complete specification, and an NDA is signed within 24 hours if you need one first. The process runs in five steps: specification, quotation, engineering, production and delivery. Steel is cut once the drawings, the bill of materials and the welding procedures are signed off, then welding, blasting, painting and fit-out follow. Quality control includes 3D measurement on a FARO arm.

Which standards does a 40 ft Office · Double Room meet?

The structure is built to execution class EXC2 under EN 1090-1, which sorts steel fabrication into classes EXC1 to EXC4. Welding follows EN ISO 3834-2, the comprehensive tier of the welding quality series. Welders are qualified to EN ISO 9606 for the processes used. Surface preparation is Sa 2.5 to EN ISO 8501-1, which is near-white blast cleaning. Production runs under an ISO 9001 quality management system and an ISO 14001 environmental management system. Dimensions and ratings come from ISO 668, testing from ISO 1496-1 and marking from ISO 6346. The quality and environmental systems are certified by an independent body rather than self-declared. Welding procedures (WPS and PQR) are prepared for each order and submitted for approval. Electrical installation follows PN-HD 60364.

What this page deliberately does not state

These figures are withheld because we have no traceable source for them. Publishing nothing beats publishing a number with no source.

• tare_kg: Not defined by ISO 668 and unit-specific. The actual tare is stamped on the CSC plate.
• payload_kg: Derived from tare, which is not published. Rating R is published instead.
• volume_m3: Not defined by ISO 668. Depends on the actual internal dimensions of the unit.
• internal dimensions: Converted unit. The insulation and lining package changes the internal dimensions, so the ISO 668 minima do not describe it.
• price_band: The site is quote-first and no price list exists in content-source/company-facts.md.

Sources

• ISO 668:2020, Series 1 freight containers, classification, dimensions and ratings (seventh edition, 2020-01), Table 2 and Table 3. 2026-08-11
• Tanax Containers production data, content-source/company-facts.md. 2026-08-11