When searching for storage containers, many customers naturally default to the well-known 20ft and 40ft containers. These sizes dominate the market due to their versatility, transport efficiency, and widespread availability. However, they are not always the most practical or cost-effective solution for every application.
At Conrail, we work with businesses, contractors, public sector organisations, and private customers across the UK who often discover that alternative container sizes provide better functionality, improved site efficiency, and significant cost savings. From compact units for restricted spaces to high-capacity and specialist containers for complex storage requirements, there is a wide range of options available beyond the standard sizes.
This comprehensive guide explains all commonly available container sizes beyond 20ft and 40ft, detailing their specifications, use cases, and advantages, while helping you determine the most suitable storage container for hire or sale from Conrail.co.uk.
Understanding Why Container Size Selection Is Critical
Selecting the correct container size is not simply a matter of choosing “bigger or smaller.” The size of your storage container directly affects operational efficiency, access, safety, transport costs, and long-term value.
A container that is too large can lead to unnecessary rental costs, inefficient site layout, and wasted space. Conversely, a container that is too small can result in overcrowding, damaged goods, restricted access, and the need for additional units. At Conrail, our approach is to align container size with real-world usage rather than assumptions.
Factors such as site dimensions, access restrictions, frequency of entry, vertical storage needs, and project duration all play a critical role in determining the most appropriate container size.
Smaller Storage Containers: Practical Alternatives to 20ft Units
10ft Storage Containers
The 10ft storage container is one of the most commonly requested alternatives to a 20ft container and is widely regarded as one of the most versatile compact storage solutions available.
A 10ft container offers approximately half the internal length of a 20ft unit while maintaining the same robust steel construction, weather resistance, and security features. This makes it particularly attractive for sites where space is limited but secure storage remains essential.
These containers are extensively used on construction sites for tools and equipment, by retailers managing overflow stock, and by schools or facilities managers needing secure on-site storage. Because of their reduced size and weight, 10ft containers are also easier and more cost-effective to transport and position, especially in urban or restricted-access locations.
For customers seeking storage containers hire for short-term projects or storage containers for sale for permanent installations, 10ft containers often deliver the best balance between capacity and practicality.
8ft Storage Containers
An 8ft storage container is a compact solution designed specifically for environments where space constraints are a primary concern. These containers are frequently used in city centres, residential areas, and confined commercial premises where larger units would be impractical or impossible to install.
Despite their smaller footprint, 8ft containers are constructed to the same industrial standards as larger containers. They are fully weatherproof, highly secure, and capable of storing valuable equipment, documents, or stock safely.
Typical applications include home renovation projects, office document storage, educational facilities, and small-scale commercial operations. Their reduced size also results in lower delivery costs and greater flexibility when positioning on-site.
6ft Storage Containers
For situations where space is extremely limited, 6ft storage containers offer a highly efficient and secure solution. These containers are particularly popular for residential properties, schools, gardens, and sites requiring discreet storage.
Although compact, 6ft containers retain the strength and durability associated with standard ISO containers. They provide a secure, lockable environment suitable for tools, maintenance equipment, sports gear, and archived materials.
At Conrail, 6ft containers are frequently chosen by customers who prioritise accessibility and minimal visual impact while still requiring professional-grade security.
High Cube Containers: Increased Height for Greater Efficiency
20ft High Cube Containers
A 20ft high cube container provides the same footprint as a standard 20ft container but includes additional internal height, typically offering approximately one extra foot of vertical space.
This increased height significantly improves usability, particularly for businesses storing tall equipment, stacked pallets, or machinery that would otherwise be difficult to accommodate. High cube containers are also beneficial for improved airflow and internal modifications such as shelving, racking, or insulation.
For customers seeking storage containers for sale, high cube units often represent better long-term value due to their enhanced capacity without increasing ground space requirements.
40ft High Cube Containers
The 40ft high cube container is designed for operations requiring maximum internal volume. It is widely used in warehousing, logistics, manufacturing, and large-scale commercial storage.
With increased height and substantial internal space, these containers are ideal for high-volume goods, bulk storage, and distribution operations. They are also commonly modified into temporary warehouses, workshops, or site offices.
At Conrail, 40ft high cube containers are available for both hire and sale, providing flexibility for long-term storage strategies or short-term project demands.
Extended-Length Containers for Large-Scale Operations
45ft Containers
A 45ft container offers extended internal length compared to standard 40ft units and is typically used in logistics and freight operations where maximising volume is critical.
These containers are well-suited to transporting or storing lightweight, high-volume goods and are often integrated into advanced supply chain operations. While less common in standard storage hire, Conrail can supply 45ft containers on request for customers with specific operational requirements.
Specialist Storage Containers for Unique Applications
Open Top Containers
Open top containers are designed to facilitate loading from above, making them ideal for oversized or heavy items that cannot be easily loaded through standard doors.
They are commonly used in construction, recycling, and industrial sectors, particularly for materials such as scrap metal, timber, or machinery. A removable tarpaulin provides weather protection while maintaining loading flexibility.
Flat Rack Containers
Flat rack containers feature collapsible or fixed ends with no side walls, allowing for the transport and storage of oversized or irregularly shaped loads.
These containers are essential for heavy machinery, vehicles, and industrial equipment where standard container dimensions are unsuitable.
Side Opening Containers
Side opening containers provide full-length access via doors along the side of the unit. This design dramatically improves accessibility and efficiency, especially when frequent loading and unloading is required.
They are particularly effective for retail storage, temporary warehouses, and shelving-based storage systems.
Refrigerated Containers (Reefers)
Refrigerated storage containers, also known as reefers, are available in multiple sizes including 10ft, 20ft, and 40ft configurations.
They are essential for temperature-sensitive storage such as food, pharmaceuticals, and medical supplies. Conrail’s reefer containers offer precise temperature control and reliable performance for both short-term hire and long-term use.
Storage Containers Hire vs Storage Container for Sale
Storage Containers Hire
Hiring a container is ideal for temporary requirements such as construction projects, events, seasonal storage, or temporary business expansion. Container hire offers flexibility, lower upfront costs, and included maintenance.
Storage Container for Sale
Purchasing a storage container is often the most cost-effective option for long-term or permanent storage needs. Ownership allows full customisation and eliminates ongoing rental fees.
At Conrail, we supply both new and used storage containers for sale, all thoroughly inspected for quality and durability.
Why Choose Conrail?
Conrail is a trusted UK supplier of storage containers, offering:
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A comprehensive range of container sizes
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Nationwide delivery
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Hire and sale options
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Custom container modifications
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Competitive pricing
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Expert industry guidance
Our team works closely with customers to ensure the right container solution is selected every time.
Frequently Asked Questions (FAQs)
What container sizes are available besides 20ft and 40ft?
Alternative sizes include 6ft, 8ft, 10ft, 20ft high cube, 40ft high cube, 45ft, and specialist containers such as reefers, open tops, and flat racks.
Are smaller containers as secure as larger ones?
Yes. All Conrail storage containers are manufactured from high-grade steel and feature robust locking systems regardless of size.
Can I hire smaller or specialist containers?
Yes. Conrail offers storage containers hire across a wide range of sizes and specialist types, subject to availability.
Do high cube containers provide better value?
High cube containers often offer better value by increasing storage capacity without increasing the footprint.
Can containers be modified?
Yes. Conrail provides full modification services including electrics, shelving, insulation, and access enhancements.
Conclusion
While 20ft and 40ft containers remain industry standards, they are far from the only solutions available. From compact 6ft storage containers to high-capacity 45ft units, selecting the right container size can significantly improve efficiency, reduce costs, and enhance site operations.
At Conrail, we specialise in providing high-quality storage containers, storage containers hire, and storage containers for sale across the UK. Our expert team is ready to help you identify the most effective container solution for your specific requirements.
Visit Conrail.co.uk to explore available options or speak with our specialists today.