Out-gauge of Open tops

While a flat rack can have out-gauge in the side-to-side, upward, and front-to-back directions, an open top container only has an out-gauge, termed Over-height (OH), in the upward direction.

  • Over-height
The freight rate for out-of-gauge (OOG) cargo includes a rate per TEU of VOID space, and the out-gauge for calculating this VOID space is determined and calculated by the carrier.

As it's not feasible to determine in advance whether the cargo or lashing materials will protrude from the container before the cargo is loaded into the open top and lashing is carried out, carriers estimate freight rates based on out-gauge criteria. (due to potential changes in the final packing size, protrusion of lashing materials, and the installation of floor dunnage, among other factors)

Please refer to the measurements in the table below, which are generally applied when quoting freight rates. Please note, however, that there might be slight variances in standards between carriers.


20’ Open Top

40’ Open Top

Over-height

H > 230 cm

H > 230 cm


Out-gauge criteria of open top container
[Out-gauge criteria of Open top]
(There might be slight variances in size between containers)


20’ Open Top

40’ Open Top

Length (External)

6,058 mm

12,192 mm

Width (External)

2,438 mm

2,438 mm

Height (External)

2,591 mm

2,591 mm

Length (Internal)

5,902 mm

12,036 mm

Width (Internal)

2,350 mm

2,350 mm

Height (Internal)

2,348 mm

2,348 mm

Door Opening Width

2,340 mm

2,340 mm

Door Opening Height

2,280 mm

2,280 mm

Header Opening: Width Between Stubs

1,940 mm

1,940 mm

Roof Opening: Width Between Top Rails

2,252 mm

2,232 mm

Roof Opening: Length Between Top Headers

5,674 mm

11,798 mm

Roof Opening: Length Between Top Troughs

5,378 mm

11,512 mm

Tare Weight

2.3 Ton

3.8 Ton

Max. Payload

28.18 Ton

26.68 Ton

Gross Weight

30.48 Ton

30.48 Ton

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