20′ / 6 m Insulated Container – Warm, Dry & Reliable Storage

The 20′ / 6 m Insulated Container is an excellent solution for customers who need more than basic weatherproof storage. Designed to provide a warm, dry and thermally protected storage environment, this container is particularly suitable for goods and equipment that need protection from condensation, moisture and changing outdoor temperatures.

At approximately 6 meters long, the container provides around 27 m³ of internal storage capacity, giving businesses plenty of room for tools, equipment, materials, inventory and other stored goods while maintaining the practical footprint of a standard 20-foot container.

Its combination of a robust marine-container structure and professional thermal insulation makes it a practical choice for construction sites, workshops, businesses, industrial facilities, warehouses, equipment storage areas and long-term storage applications.

Excellent Protection Against Moisture & Condensation

One of the biggest advantages of this insulated container is its ability to help address the moisture and condensation problems commonly associated with conventional steel storage containers.

The walls, ceiling and doors are equipped with 40–60 mm PIR insulation, while the floor is insulated from underneath using 50 mm XPS.

PIR insulation provides strong thermal performance without requiring excessive insulation thickness. According to the manufacturer, PIR can provide significantly better insulation performance than comparable wool insulation while preserving more of the container’s usable internal space.

This makes the container particularly useful when storing goods that should remain dry and protected from condensation.

Bright, Clean & Easy-to-Maintain Interior

The internal walls are finished with white steel sheets, creating a bright and professional interior.

The steel interior surfaces are also moisture-resistant and easy to clean, making the container easier to maintain than storage solutions that rely on exposed plywood or other moisture-sensitive interior surfaces.

This is especially beneficial for businesses that use the container frequently and need a storage area that can be kept clean and organized.

Strong Marine-Container Construction

The insulated unit is built using an ISO-standard compliant marine container, providing the strong structural foundation expected from a professional container.

The base container is designed to withstand demanding outdoor conditions and long-term use. Its robust construction makes it suitable for storage environments where the container may be exposed to rain, wind, sunlight and changing temperatures.

The container can be supplied using either a new or used container frame, allowing customers to select a solution based on their condition and budget requirements. The insulation itself is supplied new.

Secure Double-Door Access

The standard configuration features double doors at one end of the container, allowing convenient loading and unloading.

The doors are equipped with a welded protective case, providing additional protection around the locking mechanism.

The doors can be secured with a suitable padlock, helping protect stored equipment and materials from unauthorized access.

Ventilation for a Healthier Storage Environment

The standard insulated container includes two ventilation valves.

Ventilation helps promote controlled air circulation within the container, complementing the thermal insulation and helping maintain a more suitable internal environment.

Additional ventilation solutions can also be considered for applications requiring improved airflow.

Insulated Floor for Better Protection

Thermal protection does not stop at the walls and roof.

The floor is insulated from underneath with 50 mm XPS, helping reduce heat transfer through the base of the container.

The insulated floor also retains the container’s standard load-bearing characteristics, making the unit suitable for storing heavy equipment and materials.

The manufacturer specifically notes that the floor arrangement makes loading with a pallet jack easier because there is no additional threshold.

Technical Description & Specifications

All dimensions, insulation specifications, capacity and load information are based on the manufacturer’s published product information.

Dimensions

External Dimensions

• Length: 6,060 mm
• Width: 2,438 mm
• Height: 2,590 mm

Internal Dimensions

• Length: 5,720 mm
• Width: 2,150 mm
• Height: 2,230 mm

Internal Capacity

• Approximately 27 m³

These dimensions provide a substantial storage area while maintaining the practical footprint of a standard 20-foot container.

Insulation System

40–60 mm PIR Insulation

The walls, ceiling and doors are insulated using 40–60 mm PIR insulation.

PIR provides strong thermal performance while occupying relatively little space compared with some alternative insulation materials.

The insulation helps:

• Reduce condensation
• Maintain a more stable internal environment
• Protect stored goods from temperature fluctuations
• Improve year-round usability
• Reduce moisture-related storage problems

50 mm XPS Floor Insulation

The floor is insulated from underneath using 50 mm XPS.

This complements the wall and roof insulation and helps provide more consistent thermal protection throughout the container.

Standard Equipment

The standard configuration includes:

Structure

• ISO-standard marine-container construction
• Robust steel container frame
• New or used base-container option

Insulation

• 40–60 mm PIR insulation in walls
• 40–60 mm PIR insulation in ceiling
• 40–60 mm PIR insulation in doors
• 50 mm XPS floor insulation

Doors

• Double doors at the short end
• Welded protective case
• Padlockable locking system

Ventilation

• 2 ventilation valves

Interior

• White steel-sheet interior surfaces
• Container-grade plywood or bamboo floor
• Interior mouldings for a finished appearance

Available Options & Accessories

The container can be customized with several additional features depending on the intended application.

High Cube (HC)

A High Cube configuration can provide approximately 30 cm of additional height, making it useful when storing taller equipment or when additional vertical clearance is required.

Electricity & Lighting

Electrical installation and lighting can be added to create a more practical working and storage environment, especially when the container is accessed frequently.

Heating

A heating system can be installed for applications requiring a warmer internal environment.

The manufacturer recommends a radiator with a thermostat for winter storage, allowing the desired temperature to be maintained more consistently.

Shelving

Shelving can be installed to make better use of the available internal volume and organize tools, spare parts, equipment and inventory.

Entry Door

An additional personnel entry door can be added where the project requires more convenient everyday access.

Steel or Aluminium Floor

Customers can choose an alternative steel or aluminium flooring system when the application requires a different floor material.

EI60 Fire Insulation

For projects requiring enhanced fire-resistant insulation, the container can be equipped with EI60 insulation.

Lockbox

A lockbox can be added to provide additional protection around the container’s locking mechanism.

Hook-Lift Attachment

A hook-lift attachment can be supplied for suitable handling and transportation applications.

Custom Color

The container can be finished in a customized color according to the customer’s requirements.

New vs. Used Container Frame

Customers can select whether the insulation is installed into a new or used container frame.

New Container

The new option provides:

• Very clean overall condition
• Minimal signs of previous handling
• New insulation
• Protective case
• Properly functioning doors
• Long expected service life
• Minimal initial maintenance requirements

The manufacturer describes its new marine containers as containers that have typically been used once, making them a strong option for customers who want a clean, professional appearance.

Used Container

The used option provides a more economical alternative.

The manufacturer describes used units as:

• Intact
• Watertight
• Typically 7–15 years old
• Showing external signs of previous use
• Fitted with new insulation
• Potentially requiring maintenance such as rust treatment or door servicing

This makes the used option attractive for customers who prioritize cost efficiency while still requiring a properly insulated storage environment.

Ideal Applications

The 20′ Insulated Container is particularly suitable for:

• Construction-site storage
• Tool storage
• Equipment storage
• Warehouse overflow
• Industrial storage
• Workshop storage
• Business inventory
• Agricultural equipment
• Temperature-sensitive materials
• Moisture-sensitive goods
• Spare parts storage
• Electrical equipment
• Machinery components
• Long-term storage
• Year-round outdoor storage

It is especially valuable for goods that can be damaged by condensation, excessive moisture or large temperature fluctuations.

Why Choose the 20′ Insulated Container?

The standard steel container is already a durable storage solution, but the 20′ Insulated Container takes storage protection considerably further.

Its combination of PIR wall, ceiling and door insulation, XPS floor insulation, moisture-resistant interior surfaces and ventilation creates a substantially more controlled storage environment.

With approximately 27 m³ of internal capacity, the container provides enough room for substantial quantities of equipment and materials without requiring the construction of a permanent storage building.

The robust marine-container construction also means that the unit can be transported and repositioned using established container handling methods.

For customers who require even more functionality, the available options—including heating, lighting, shelving, entry doors, High Cube configuration, alternative flooring, EI60 insulation, lockboxes and custom colors—allow the container to be tailored to the intended application.

Important Transportation Note

MC Containers states that this insulated container is built using an ISO-compliant marine container and can be transported by road like a standard container. However, its product information specifies that the insulated model is not suitable for train or marine traffic unless supplied as an appropriate SOC model. Therefore, if your customer intends to use the container for freight or international transportation, the required transport configuration should be confirmed before purchase.

For customers looking for a durable, professional and moisture-resistant storage solution that can be used throughout the year, the 20′ / 6 m Insulated Container offers an excellent combination of capacity, thermal protection, security and customization.