20ft Shipping Container – One-Trip, Marine Plywood Floor

These 20-foot 1-trip shipping containers have made only a single international voyage before leaving active service. Built from COR-TEN steel for durability and weather resistance, they suit secure storage, site offices and conversion projects, and each unit has been inspected to confirm its structure and operation. Nationwide delivery is available.

Key Features

• Single-trip origin: Carried goods from overseas to the United States just once, leaving far less wear than a standard used unit.
• COR-TEN steel construction: Weathering steel forms a protective surface layer on exposure, reducing the need for painting.
• Weather-resistant design: Watertight construction with marine-grade seals on the double-swing doors.
• Ventilation: Passive vents on both end walls help reduce condensation in use.
• Solid timber flooring: Industrial-grade plywood flooring treated to resist moisture and carry heavy loads.
• Interior locking: Wind- and rain-resistant door setup with locking bars on both doors.
• Forklift access: Standard fork pockets on both sides for transport and positioning.

One-trip containers sit between new and multiple-trip units. Each completed a single ocean voyage carrying cargo from its manufacturing origin to the United States, then entered the depot network without being sent out again. That single use typically leaves floors, walls and door seals less worn than on containers that have made many voyages.

The shell is weathering steel, often called by the trademarked name COR-TEN. The material develops a stable, rust-like appearance after exposure, and this oxidised layer acts as a protective barrier against further corrosion rather than signalling any structural loss. Its composition includes copper, chromium and nickel, which help form the protective patina.

Access is via double-swing doors on one end. Each door has two locking bars that engage the frame at multiple points, and the locking mechanism accepts standard seal tags for security. The door seals are synthetic rubber and stay flexible across the temperature ranges common to most regions. Flooring is 28-millimetre marine-grade plywood, factory-treated with preservatives and carried on transverse steel members spaced at regular intervals beneath the floor, designed to take both evenly distributed loads and point loads from wheeled equipment during loading. Ventilation comes from passive vents near the top of each end wall that allow airflow while keeping rain out, cutting moisture buildup when the container is sealed for long periods.

Technical specifications: external length 20 ft (6.06 m), external width 8 ft (2.44 m) and external height 8 ft 6 in (2.59 m); internal length 19 ft 4 in (5.90 m), internal width 7 ft 8 in (2.34 m) and internal height 7 ft 10 in (2.39 m). Door opening width is 7 ft 8 in (2.34 m) and door opening height is 7 ft 5 in (2.26 m). Maximum gross weight is 67,200 lb (30,480 kg), tare weight is approximately 5,140 lb (2,330 kg), and payload capacity is approximately 62,060 lb (28,150 kg). The material is COR-TEN weathering steel, the flooring is 28 mm marine-grade plywood, and forklift pockets are present on both sides. Dimensions are nominal and may vary slightly between manufacturers, with weight capacity based on standard ISO specifications.

These containers serve many commercial and private uses: on-site storage of equipment, tools, materials and inventory at construction, industrial or agricultural sites; warehouse extension for overflow inventory beside existing facilities; conversion projects providing a base for workshops, small offices or habitable spaces when modified by qualified professionals; retail applications such as pop-up locations or temporary sales facilities on prepared sites; and equipment enclosures giving weathertight housing for generators, pumps or mechanical gear. The dimensions accommodate standard pallet configurations for efficient bulk storage, and units are designed for ground-level placement on compacted, level surfaces or supporting foundations where local rules require.

The package includes one 20-foot 1-trip shipping container as described, double-swing doors with four locking bars (two per door), intact and functional door seals, and installed passive ventilation vents.