A 40HC Double Door Container ( 40HC DD Container), also known as a tunnel container, is an ISO standard dry freight container with double doors installed at both ends. Different from standard containers with only one end door, it features through loading & unloading, dual-side access and flexible space division, fully compliant with international shipping standards.
Dual end doors: Full-opening double doors at both ends, 180° opening design, equipped with durable locking rods and waterproof sealing strips for dustproof and weatherproof performance.
Reinforced construction: Enhanced corner posts, end frames and base chassis to ensure stacking, hoisting and long-distance transportation safety.
Heavy-duty floor: High-strength wooden floor, strong load capacity, suitable for forklift and pallet operation.
Standard ventilation vents to prevent condensation and keep cargo dry.
Through loading and unloading: Cargo can be loaded from one end and unloaded from the other side, no need for cargo shifting or reversing, greatly improving handling efficiency.
Flexible dual-side access: Goods can be accessed from either door, very convenient for inventory management and daily storage use.
Dividable space: A partition wall can be installed inside to divide the container into two independent spaces for multi-purpose use.
Wide compatibility: When one end is closed, it can be used as a standard shipping container, applicable for sea freight, truck transportation and on-site storage.
| Item | Standard Shipping Container | DD Double Door Container |
|---|---|---|
| Door Position | Only one end | Doors at both ends |
| Loading & Unloading | One-way, requires cargo shifting | Dual-way / through type, no cargo shifting needed |
| Partition Function | Difficult | Easy to install middle partition |
| Self-weight | Lighter | Slightly heavier (+300–500kg) |
| Price | Base price | About 10%–15% higher |
| Application | General dry cargo, single-side loading | Vehicles, long-size goods, storage & modification |
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