Guide · Dimensions and units
Container Door Dimensions
Yuri Kan Checked against 29 of 88 published sheets Updated
A standard container door opens 2.340 m wide × 2.280 m high (7′8″ × 7′6″), per 13 of 18 sheets; on high cubes the opening is 2.340 × 2.585 m (7′8″ × 8′6″), per 13 of 19 sheets. Both are smaller than the interior behind them (2.352 m wide, 2.393 or 2.698 m high) — the door frame, not the box, decides what loads. Cars, EUR pallets on forklifts, household appliances and 2.2 m racking all pass; anything taller than the 2.280 m door needs a high cube or an open top.
The door is the bottleneck, not the box. A standard container’s aperture measures 2.340 m wide × 2.280 m high, while the interior behind it is 2.352 m wide and 2.393 m tall — the opening is narrower and shorter than the space it serves. Think of it as a letterbox: the question for loading is never “does it fit inside” but “does it fit through”.
High cubes raise only the door: 2.340 × 2.585 m — the extra 30 cm of aperture is often the real reason to specify a high cube for machinery and racked cargo.
The numbers in this chart
| Item | Width, mm | Height, mm |
|---|---|---|
| Opening | 2,340 | 2,280 |
| Container end, external | 2,438 | 2,591 |
| EUR pallet + pallet truck | 1,200 | 1,700 |
| Passenger car | 1,850 | 1,500 |
| Racking bay 2.2 m | 1,000 | 2,200 |
What fits through a container door, and what does not
| Load | Critical dimension | Fits? |
|---|---|---|
| EUR pallet on a pallet truck | 0.8–1.2 m wide (per EPAL data sheet 05/2025) | ✓ easily |
| Standard car | width with mirrors folded, from the car’s own sheet | ✓ when under 2.340 m |
| US-style fridge-freezer | width and height — made to pass a house door, far smaller than this one | ✓ |
| Warehouse racking, 2.2 m uprights | 2.2 m tall | ✓ |
| Machinery taller than 2.280 m | >2.280 m | ✗ standard door — crane it into an open top |
The pattern: almost nothing common fails the standard door. The genuine failures are tall machinery, some agricultural equipment and crated industrial loads over 2.280 m — exactly the cargo the open top and flat rack exist for.
Checked : outside sizes set by ISO 668, read in IS 6566:2001, GOST R 51876-2008 and GOST R 53350-2009; every other figure against 29 published sheets of 20 lines, lessors and makers. A sheet agrees within ±5 mm, or ±2 % for a mass and ±1 % for a volume; a maximum gross is a rating and must be the same. Every figure and its sources
The letterbox effect: what the door frame takes from the interior
Height is where loads get caught: a crate that stands happily inside the box can still be as much as 11 cm too tall for the frame.
- Interior width 2.352 m, door width 2.340 m — you lose 12 mm.
- Interior height 2.393 m, door height 2.280 m — you lose 113 mm.
Always plan loading against the door figures — a container load calculator tests every piece against them. Remember the top rail of the frame is the first thing a forklift mast or tall crate will hit.
How container doors are built: leaves, lock rods and gaskets
Two steel door leaves, each carrying two vertical lock rods that rotate cams into keepers on the top and bottom rails. Four rods in total is why a sealed container is secured at eight points. The leaves swing right round, back flat against the container sides, and tie off for loading.
A continuous rubber gasket around each leaf makes the box wind- and water-tight. When a used container leaks, the gasket is the usual suspect; the classic test is to close yourself inside and look for daylight.
Door hardware: what wears and how it is fixed
Door hardware fails in a predictable order.
- The gaskets go first: the rubber hardens and cracks after years of sun and salt air, and daylight at the seal means water follows. Replacement means new seal strips and a few hours of work.
- Next come the lock rods and cams: bent rods and worn cam/keeper pairs make doors stiff long before they make them insecure. Penetrating oil and keeper adjustment cure most cases, and replacement rods are inexpensive bolt-on parts.
- Hinges fail last: a door that sags or refuses to align has usually dropped on worn hinge pins. Mild sag is fixed by adjustment and shimming. A door that must be lifted into position needs re-hanging — a welding job, and on a cheap box often the point where replacing the unit beats repairing it.
When one end is not enough: double-door and open-side containers
- Doors at both ends: the double door (tunnel) container — load and unload without reversing anything out, or split the box into two compartments.
- Full side access for forklifting any pallet directly: the open-side variant with bi-fold doors along one wall.
Both keep the standard end-door dimensions.
Frequently asked questions
How wide is a container door opening?
2.340 m (7′8″) on standard 20 ft and 40 ft containers, high cubes included, per 17 of 19 sheets. US domestic 48 ft and 53 ft units open wider: 2,491 mm on the 48 ft, from one sheet (Sea Box), and 2,489 mm on the 53 ft, per 6 of 8 sheets — about 8′2″.
Are container doors smaller than the interior?
Yes — the frame steals 12 mm (½ in) of width and 113 mm (4½ in) of height on a standard box: a 2.340 × 2.280 m (7′8″ × 7′6″) opening against a 2.352 m wide, 2.393 m tall interior (7′8½″ × 7′10″), per 13 of 18 sheets. Plan every load against the door figures, not the internal ones.
How high is a high cube container door?
2.585 m (8′6″) — per 13 of 19 sheets, about 30 cm more than the standard 2.280 m. Width stays 2.340 m. That extra 30 cm of aperture is often the deciding reason to book a high cube.
Can a forklift drive through a container door?
Compact warehouse forklifts and pallet trucks, yes — the 2.340 × 2.280 m opening clears them, and container floors are tested with a 7,260 kg (16,000 lb) forklift axle, 5,460 kg (12,000 lb) on boxes built to the original 1990 test (the amended figure as IS 13288 Part 1, India’s identical adoption of ISO 1496-1, prints it; the 1990 one as ISO 1496-1:1990 and the CTU Code do). Full-size counterbalance trucks with tall masts usually cannot: the mast exceeds the 2.280 m frame.