The main types of shipping container for freight include standard dry containers, refrigerated containers, high cube containers, open-top containers, flat-rack containers, and tank containers. Each type is designed to solve specific cargo challenges in international freight.
1. Standard Dry Container
The most common container type worldwide. Available in 20-foot and 40-foot lengths. Fully enclosed with steel corrugated walls, a solid steel roof, wooden floor, and rubber-sealed double doors at one end. Used for dry, non-perishable general freight: consumer goods, electronics, clothing, machinery, and packaged products. The standard dry container handles the majority of all containerized trade globally.
2. Refrigerated Container (Reefer)
An active refrigeration unit integrated into one end of the container maintains precise controlled temperatures throughout the voyage. Available in 20-foot and 40-foot High Cube variants. Temperature range: -60°C to +25°C depending on model. Used for fresh produce, frozen foods, pharmaceuticals, dairy, flowers, and any temperature-sensitive cargo requiring a continuous cold chain from origin to destination.
3. High Cube Container
Identical to the standard dry container except 9 feet 6 inches tall rather than 8 feet 6 inches — one additional foot of interior height. Available in 40-foot and 45-foot lengths. Provides approximately 13% more cubic volume than the equivalent standard container. Increasingly used as the default container for consumer goods, e-commerce shipments, and bulky manufactured goods. The 40-foot high cube is now the most commonly shipped container type in many major trade lanes.
4. Open Top Container
Has no fixed roof — a removable tarpaulin cover on steel bows provides weather protection. Cargo that is too tall for a standard container — machinery, large coils, marble blocks, glass sheets — can be craned in from above. Available in 20-foot and 40-foot sizes. Cargo may protrude above the container height (over-height cargo), requiring special stowage planning on the vessel and applicable surcharges from the carrier.
5. Flat Rack Container
Consists of a platform floor with fixed or collapsible end walls only — no side walls or roof. Used for very wide, very tall, or very heavy cargo that cannot fit into any enclosed container: large construction equipment, transformers, wind turbine components, industrial vehicles, and heavy steel structures. Multiple flat racks can be grouped to accommodate extreme-width loads. Flat rack cargo is classified as out-of-gauge (OOG) and requires special permits and planning for road transport.
6. Tank Container
A cylindrical stainless steel pressure vessel within an ISO exterior frame. Used to transport bulk liquids: industrial chemicals, food-grade oils, pharmaceutical liquids, wine, and liquid food ingredients. Available in 20-foot (standard) and 40-foot configurations. Complies with IMDG code for hazardous liquid transport and food-contact regulations (316L stainless steel with EHEDG-compliant fittings) for food-grade applications.
7. Specialized Container Types
Beyond the main types, specialized containers serve niche requirements: ventilated containers for coffee and cocoa; insulated containers for temperature-buffering without active refrigeration; platform containers (bolsters) for extreme-dimension project cargo; car carrier containers for vehicle exports; and garment-on-hanger (GOH) containers fitted with hanging rails for textile exports.
Cargo-Specific Container Selection
Select the container type based on: the physical state of the cargo (solid, liquid, frozen, perishable, oversized); the loading method available at origin (forklift, crane, roll-on/roll-off); the weight and volume of the shipment; and the temperature requirements during transit. Mismatching cargo to container type frequently results in damaged goods, regulatory non-compliance, and expensive carrier claims.
Bottom Line
Understanding the different container types ensures the right equipment is booked for every shipment. The standard dry container handles most global trade, but specialized types are essential for specific cargo categories. All container types carry an ISO 6346 identification number and can be tracked from booking to delivery on TraceContainer.com.