
Every container we ship, with the weight you can actually load.
Dimensions, capacities and U.S. DOT legal weight limits for all 11 equipment types we arrange — in imperial or metric, plus a tool that tells you what fits before you book.
Enter your cargo. We will tell you which boxes work.
Checks the door opening, the interior envelope, and the U.S. DOT road weight limit — the three things that actually stop a load.
Not a booking. Always confirm with our team before committing to a shipment.
All equipment at a glance
Every type we arrange, on one screen. Click any row for the full drawing and specifications.
| Equipment | Interior L×W×H (in) | Door W×H (in) | Roof opening (in) | Capacity | Max legal cargo | Tare | Pallet positions |
|---|---|---|---|---|---|---|---|
| Dry Equipment | |||||||
| 20′ Standard | 231″×92″×93″ | 92″×89″ | — | 1,000 cu ft | 37,000 lb | 5,120 lb | 10 |
| 40′ Standard | 473″×92″×93″ | 92″×89″ | — | 2,000 cu ft | 47,000 lb | 8,200 lb | 20 |
| 40′ High Cube | 473″×92″×106″ | 92″×101″ | — | 2,350 cu ft | 47,000 lb | 8,640 lb | 20 |
| 45′ High Cube | 533″×92″×106″ | 92″×101″ | — | 2,700 cu ft | 41,000 lb | 10,760 lb | 22 |
| 45′ × 102″ High Cube | 533″×98″×106″ | 98″×104″ | — | 2,850 cu ft | 41,000 lb | 11,460 lb | 28 |
| Refrigerated | |||||||
| 20′ Refrigerated | 214″×90″×87″ | 90″×88″ | — | 800 cu ft | 37,000 lb | 6,525 lb | 8 |
| 40′ High Cube Reefer | 456″×90″×100″ | 90″×100″ | — | 2,150 cu ft | 47,000 lb | 9,920 lb | 18 |
| Special Equipment | |||||||
| 20′ Open Top | 233″×92″×92″ | 91″×89″ | 210″×88″ | Variable | 37,000 lb | 4,450 lb | n/a |
| 40′ Open Top | 473″×92″×92″ | 91″×89″ | 455″×88″ | Variable | 47,000 lb | 8,950 lb | n/a |
| 20′ Flat Rack | 233″×94″×87″ | open deck | — | Variable | 37,000 lb | 6,217 lb | n/a |
| 40′ Flat Rack | 474″×94″×76″ | open deck | — | Variable | 47,000 lb | 11,684 lb | n/a |
Capacity is realistic loadable volume, not the theoretical cube. Max legal cargo is for a standard chassis under U.S. DOT federal limits (80,000 lb gross combination, 34,000 lb tandem axle) with no overweight permit. A pallet position is one floor spot — stackable cargo can double the pallet count.
How these numbers work
The U.S. Department of Transportation caps a tractor-trailer at 80,000 lb gross combination weight, 34,000 lb on a tandem axle and 20,000 lb on a single axle. Max legal cargo is what is left after the tractor, the chassis and the container’s own tare weight.
On 20′ equipment the tandem axle limit binds before the gross weight limit does — that is why a 20′ takes less cargo than a 40′ even though the box itself is rated stronger.
Every figure on this page assumes a standard day-cab tractor and a standard chassis, with no overweight or tri-axle permit. A heavier tractor or chassis lowers what you can load, and some states enforce axle spacing more tightly than others. Confirm the weight with us before you commit to a booking.
Dry Equipment
General, palletized and boxed cargo. Standard, High Cube and widebody — the boxes behind most of what we move out of Miami.
Container terminal
20′ Standard
ISO 22G1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 238″ | 96″ | 102″ |
| Internal | 231″ | 92″ | 93″ |
| Door openingthe usual constraint | — | 92″ | 89″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 1,000 cu ft | 1,165 cu ft | |
The everyday box for dense, heavy cargo. On a standard chassis the 34,000 lb tandem axle limit binds before the space does — you will normally weigh out before you cube out.
40′ Standard
ISO 42G1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 480″ | 96″ | 102″ |
| Internal | 473″ | 92″ | 93″ |
| Door openingthe usual constraint | — | 92″ | 89″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 2,000 cu ft | 2,377 cu ft | |
The true 8’6″-tall 40′. Increasingly rare — most carriers now run High Cube as the default 40′. Confirm availability before quoting it.
40′ High Cube
ISO 45G1 Most booked| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 480″ | 96″ | 114″ |
| Internal | 473″ | 92″ | 106″ |
| Door openingthe usual constraint | — | 92″ | 101″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 2,350 cu ft | 2,682 cu ft | |
The workhorse. A full extra foot of interior height over the Standard 40′ for the same footprint, the same floor plan and the same road weight limit — which is why it has largely replaced it.
45′ High Cube
ISO L5G1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 540″ | 96″ | 114″ |
| Internal | 533″ | 92″ | 106″ |
| Door openingthe usual constraint | — | 92″ | 101″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 2,700 cu ft | 3,022 cu ft | |
Five more feet of floor than a 40’HC. The road weight limit is lower than a 40′ — the box is heavier empty and rides on a longer wheelbase — so this is the right call when your cargo cubes out before it weighs out, not when it is dense.
45′ × 102″ High Cube
ISO L5G1 Widebody| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 540″ | 102″ | 114″ |
| Internal | 533″ | 98″ | 106″ |
| Door openingthe usual constraint | — | 98″ | 104″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 2,850 cu ft | 3,226 cu ft | |
Six inches wider inside than a standard 45′. That is the difference between fitting two 48″ pallets side by side and having to turn them — the biggest floor-plan upgrade available. King Ocean does not carry this box; Seaboard and Crowley do.
Refrigerated
Temperature-controlled units for produce, seafood, pharma and perishables, with the machinery end doing the work.
EFI warehouse dock, Miami
20′ Refrigerated
ISO 22R1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 238″ | 96″ | 102″ |
| Internal | 214″ | 90″ | 87″ |
| Door openingsee note below | — | 90″ | 88″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 800 cu ft | 986 cu ft | |
Published door height is 1″ taller than the interior height. On a reefer the clear height is limited by the machinery end, not by the door — so a piece can pass through the doorway and still not stand up at the front of the box. Confirm with us before planning a tight load.
(−22°F to +86°F)
Refrigeration machinery consumes roughly 17 inches of interior length versus a 20′ dry. Never plan a reefer load off dry-container dimensions.
40′ High Cube Reefer
ISO 45R1 Most booked| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 480″ | 96″ | 114″ |
| Internal | 456″ | 90″ | 100″ |
| Door openingthe usual constraint | — | 90″ | 100″ |
| Capacity | Realistic | Theoretical | |
| Loadable volume | 2,150 cu ft | 2,366 cu ft | |
(−22°F to +86°F)
Never block the T-floor — airflow runs beneath the cargo, and a blocked floor is the most common cause of a temperature claim. Load to the red line, not to the ceiling.
Special Equipment
Open Top and Flat Rack for cargo that will not fit through a door — machinery, vehicles and project freight.
Port of Miami
20′ Open Top
ISO 22U1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 238″ | 96″ | 102″ |
| Internal | 233″ | 92″ | 92″ |
| Door openingthe usual constraint | — | 91″ | 89″ |
| Roof openingcrane loading | 210″ | 88″ | — |
| Capacity | Realistic | Theoretical | |
| Loadable volume | Variable | 1,130 cu ft | |
Removable tarpaulin roof and swing-out door header for crane or top loading. Usable capacity depends on how far your cargo protrudes above the rails — anything over the top line is out-of-gauge and changes the rate.
40′ Open Top
ISO 42U1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 480″ | 96″ | 102″ |
| Internal | 473″ | 92″ | 92″ |
| Door openingthe usual constraint | — | 91″ | 89″ |
| Roof openingcrane loading | 455″ | 88″ | — |
| Capacity | Realistic | Theoretical | |
| Loadable volume | Variable | 2,347 cu ft | |
Removable tarpaulin roof and swing-out door header. The roof opening, not the door, is the constraint when you are craning cargo in from above.
20′ Flat Rack
ISO 22P1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 238″ | 96″ | 102″ |
| Internal | 233″ | 94″ | 87″ |
| Door opening | None — open deck, top/side load | ||
| Capacity | Realistic | Theoretical | |
| Loadable volume | Variable | — | |
Collapsible ends, no side walls, no roof — for cargo that will not fit through a door. There is no fixed capacity; the constraints are weight, lashing and out-of-gauge clearance.
40′ Flat Rack
ISO 42P1| Dimensions | Length | Width | Height |
|---|---|---|---|
| External | 480″ | 96″ | 102″ |
| Internal | 474″ | 94″ | 76″ |
| Door opening | None — open deck, top/side load | ||
| Capacity | Realistic | Theoretical | |
| Loadable volume | Variable | — | |
For oversized machinery, vehicles and project cargo. Anything wider than the deck or taller than the end posts is out-of-gauge and needs approval before booking.
See the difference, actually to scale.
Same scale, real proportions. Pick up to five.