Complete Buying Guide: How to Choose a New 20-Foot Open Side Container

Why choose a new 20-foot Open Side container?

The new 20-foot Open Side container is designed for anyone who needs full side access to load and unload bulky, long, or hard-to-handle goods. Unlike the standard dry container, whose only opening is at the rear, the Open Side has two doors along its entire length, which radically transforms handling operations. This guide details the selection criteria, uses, points of caution, and best practices for investing with confidence.

A new container offers a sound structure, fresh paint, intact seals, and a clean usage history. It guarantees intensive use without unpleasant surprises, whether for storage, transport, or a fit-out project.

Technical specifications to know before buying

Dimensions and volume

The 20-foot Open Side container complies with ISO 668 standardized dimensions: 6,058 mm long, 2,438 mm wide, and 2,591 mm high externally. Inside, you have approximately 5,898 mm long, 2,352 mm wide, and 2,393 mm high, giving a usable volume of about 33 m³. These measurements are identical to those of a standard dry container, ensuring interchangeability on ships, trains, and trucks.

Materials and construction

The structure is made of Corten steel, an alloy that develops a protective oxide layer slowing atmospheric corrosion. Factory-applied paint reinforces this protection and contributes to watertightness. The floor is 28 mm marine plywood, a dense material that supports pallet jacks, forklifts, and concentrated loads without deformation.

The side opening is provided by two hinged doors covering the entire length. Each door is equipped with container locks (usually four per door) and rubber or EPDM seals to prevent water and dust infiltration. The double rear doors retain conventional end access.

Weight and payload

An empty 20-foot Open Side container weighs approximately 2,200 to 2,400 kg. The payload is around 28,000 kg, depending on the exact configuration. These values are important for complying with gross vehicle weight limits during road transport.

Compliance and certifications

The container complies with ISO 668 (dimensions), ISO 1496 (structural performance), and the CSC Convention (approval plate for international transport). The presence of the CSC plate is a guarantee of safety and facilitates resale. Also check for corner castings compliant with ISO 1161 for lifting and locking.

The advantages of a new Open Side container

• Full side access: loading and unloading without obstruction along the entire length, ideal for long goods (tubes, profiles, panels) or bulky items (machines, pallets).
• Time savings: reduced maneuvering and downtime for handling equipment.
• Versatility: suitable for storage, multimodal transport, and fit-out (office, workshop, technical room).
• Durability: Corten steel and new paint for a long service life, even outdoors.
• Security: multiple locks and new seals for optimal watertightness.
• Resale value: a new CSC container resells more easily than a used one.

How to choose your new 20-foot Open Side container: the 7 key criteria

1. Precisely define the use

Static storage, frequent transport, fit-out as a technical or commercial space? The use determines the level of finish, options (ventilation, insulation, lighting), and door type. For simple storage, a standard model is enough. For regular back-and-forth trips, check the robustness of hinges and locks.

2. Check new condition and compliance

A new container should have uniform paint, flexible and intact seals, continuous welds, and no deformation. Check the CSC plate and ISO conformity certificate. Make sure all locks are present and functional.

3. Choose the right size and volume

The 20-foot offers 33 m³, compared with 67 m³ for a 40-foot. If you have limited ground space or moderate needs, the 20-foot is more maneuverable and less bulky. For large volume and side access, the 20-foot Open Side remains the best compromise.

4. Compare special container types

Open Top (removable roof) for tall loads, Flat Rack (no walls) for very wide loads, High Cube (extra height) for more volume. The Open Side stands out for its full side access while maintaining complete weather protection.

5. Plan transport and delivery

An empty 20-foot container weighs about 2.3 tonnes. Road transport requires a container truck with twist-locks. The total convoy height must not exceed 4 meters, and width 2.55 meters. For on-site unloading, plan for a truck with an auxiliary crane or a forklift with sufficient capacity, as well as stabilized ground and maneuvering space.

6. Plan fit-out and options

Ventilation (vents, grilles) to prevent condensation, insulation, electricity, air conditioning, shelving. The side opening makes it easy to install a glass door, counter, or partition. Check planning permissions if you convert the container into a premises.

7. Budget the investment

The price of a new 20-foot Open Side container is higher than a standard dry container, due to manufacturing complexity and side doors. Also factor in transport, handling, possible fit-out, and maintenance. A new model avoids refurbishment costs.

Sector-specific use cases

Construction and building

Storage of tubes, scaffolding, profiles, tools, equipment. The side opening allows pallets to be loaded with a forklift without complex maneuvering. Can serve as a break room or site office.

Industry and logistics

Buffer storage area for bulky parts, spare parts room, mobile logistics base. Equipment rental companies see it as a way to protect their equipment from moisture and theft.

Agriculture

Storage of seeds, fertilizers, fodder, small equipment. The side opening facilitates loading bags or bales. Can be fitted out as a technical room for pumps or generators.

Events and retail

Stand, control room, changing room, temporary storage, pop-up shop, pickup point. The full side opening allows products to be displayed along the entire length.

Individuals

Accessible and durable storage space for garden equipment, vehicles, tools, or a personal workshop project.

Comparison with other container types

• Standard dry 20-foot: rear access only, cheaper, more rigid side structure. For simple storage, it is often enough.
• 40-foot: more volume (67 m³) but bulkier and heavier. The 20-foot is easier to move and install.
• Open Top: removable roof for tall loads, but no side access.
• Flat Rack: no walls or roof, for very wide loads, but no weather protection.
• High Cube: 30 cm taller, more volume. Also available as Open Side.
• Reefer: refrigerated, for perishable goods, requires a power supply.

The Open Side container retains complete protection while offering wide access. It is a versatile choice for loads that cannot be loaded from the rear.

Points of caution when buying

Visual inspection on delivery

Inspect welds, seals, locks, door alignment, and absence of deformation. Check that the paint is uniform and the seals are flexible. A new container should show no perforating rust.

Document verification

Require the CSC plate and, if available, the ISO conformity certificate. These documents attest to compliance and facilitate resale.

Transport and regulations

The gross vehicle weight must not exceed 40 tonnes (44 tonnes in certain combined transport cases). The container must be locked onto the chassis with twist-locks. The total convoy height is limited to 4 meters, width to 2.55 meters. For exceptional convoys, permits are required.

Installation and maintenance

Prepare the ground

Place the container on concrete blocks, beams, or light foundations to avoid direct contact with the ground and limit corrosion from below. Provide a slight slope for water drainage. If stacking, respect the manufacturer's stacking limits.

Routine maintenance

Regularly inspect walls, roof, floor, and door frames. Clean gutters and door bottoms. Treat seals with a suitable product to keep them flexible. Touch up scratches with an anti-corrosion primer and topcoat. Repair floor chips with a suitable resin.

Ventilation and condensation

To store moisture-sensitive materials, add vents or use a dehumidifier. Natural or forced ventilation limits condensation.

Safety and protection

Equip doors with quality locks and, if necessary, additional padlocks. Keep doors closed and locked when the container is unattended. For sensitive storage, consider an alarm or surveillance system. Interior lighting can be powered by an electrical extension or standalone solutions (solar panels, batteries).

Open Side container fit-out: what possibilities?

The 20-foot Open Side container is an excellent base for fit-out, as its side opening facilitates tradespeople's work and material delivery. Here are the most common transformations.

Site office or welfare room

The side opening allows a glass door or joinery unit to be installed without complex cutting. Add mineral wool or rigid panel insulation, plywood or plasterboard lining, an electrical network with a distribution board, and auxiliary heating. Natural light can come from the glass door or windows created in the opposite wall. This type of fit-out is suitable for site camps, guard posts, and temporary meeting rooms.

Workshop or technical room

For artisanal or industrial use, prioritize a reinforced floor (steel sheet or thick wood panels), workbenches fixed to the uprights, waterproof LED lighting, and air extraction if operations generate dust or vapors. Side access facilitates the entry of heavy machine tools, such as a lathe, drill press, or welding station.

Point of sale or reception area

The full side opening easily transforms into a counter or display window. You can integrate an awning, a retractable awning, display shelves, and ambient lighting. This format is popular for pop-up shops, markets, fixed food trucks, and order pickup points.

Organized storage

Without major transformation, the interior can be equipped with metal shelving, pallet racks, or wall supports. The side opening allows loading and unloading without moving racks at the back. Removable partitions can divide the space into dedicated zones.

Constraints to respect

Any structural modification (drilling the shell, adding openings, modifying doors) must preserve the rigidity of the whole and not compromise watertightness. Drill holes must be treated against corrosion. Finally, installing a fitted-out container on a plot may require planning permission depending on the duration and nature of the project.

New or used container: which to choose?

The choice between a new and a used container depends on budget, use, and expected service life.

The advantages of new

A new container guarantees a structure without repairs, original paint, new seals, and optimal watertightness. It has no residual odor or trace of previous goods, which is important for food or pharmaceutical storage. It is also easier to fit out, as the walls are sound and flat. Finally, its resale value remains high for several years.

The limits of new

The price is higher than a recent used one. Lead times may be longer depending on available stock. Finally, a new container remains subject to the same transport and installation constraints as a used one.

When to favor used

For purely utilitarian use (storage of construction materials, rubble, fodder), a used container in good condition may suffice. Then check for no perforating rust, floor condition, and seal watertightness. The price difference can be significant, but the gap narrows if repairs are needed.

Decision criteria

• Intended duration of use: beyond ten years, new is often more cost-effective.
• Sensitivity of contents: food, electronic equipment, documents: favor new.
• Fit-out project: new avoids structural unpleasant surprises.
• Available budget: used remains relevant for temporary use.

Common mistakes to avoid

Many buyers make mistakes that can be costly. Here are the main ones.

Underestimating site access

A container truck requires significant maneuvering space and stabilized ground. A narrow path, steep slope, or low branches can prevent delivery. It is advisable to check the route in advance and, if needed, opt for delivery with an auxiliary crane or unloading at a relay site.

Neglecting total loaded weight

The empty container already weighs over two tonnes. Once loaded, the gross vehicle weight may exceed legal limits. You must know the exact payload and comply with the CSC plate.

Forgetting ventilation

A perfectly watertight container can become humid inside through condensation. If you store sensitive materials, plan for vents or a dehumidifier from the time of purchase.

Choosing an unsuitable model

An Open Side is not always necessary. For standard goods loaded from the rear, a standard dry container is enough and costs less. Conversely, for very tall loads, an Open Top or Flat Rack may be more relevant. Defining the real use avoids costly oversizing.

Neglecting future maintenance

A new container requires little maintenance, but not none. Checking seals, touching up scratches, and cleaning the roof are simple actions that extend service life. Ignoring them accelerates corrosion.

Regulations and transport: what you need to know

Transporting a 20-foot container in France is governed by the highway code and safety rules. The gross vehicle weight of a road train is generally 40 tonnes for a five-axle articulated vehicle, and can reach 44 tonnes in certain combined transport cases. The container must be locked onto the chassis or trailer using twist-locks. Faulty securing exposes you to accident risks and penalties.

The total convoy height must not exceed 4 meters, except with special permission. The maximum authorized width is 2.55 meters, compatible with the 2.438 meters of an ISO container. The maximum length of a road train is 16.50 meters. For exceptional convoys, prior permits are required.

Rail and river transport is an interesting alternative for long distances. The 20-foot container is compatible with container wagons and barges. In France, combined rail-road transport benefits from aid and incentives under the energy transition. For companies concerned about their carbon footprint, this option deserves consideration.

On the customs side, a container used for international transport must comply with the CSC Convention and carry a valid approval plate. For strictly domestic use, this requirement is not always required, but it remains a guarantee of quality and safety. In case of resale, a CSC container is easier to market.

Conclusion

The new 20-foot Open Side container is a durable investment for professionals and individuals alike. Its versatility, robustness, and compliance with international standards make it a reliable tool for many applications. Before buying, precisely define the use, location, and access constraints. A well-chosen and properly maintained container will serve you for many years.