- Side door flat pack storage containers
- 3m and 4m long units available
- 2.1m wide & 2.1m high
- Single door on long side of container
- Double door variant available
- End door options available here
- Very simple to assemble
- Galvanised steel construction
- Double locking door
- Ideal for hard to access sites or customers needing small storage space
- Can be returned to flat pack, moved and rebuilt if needed
- Only tools required – socket set and screwdriver
- Green powder coating finish as standard
How to Order
Call us free on 0808 1234 215 quoting product reference 15509 or request a callback.
We are open 8:30am – 5pm, Weekdays
Product Description
Side door flat pack storage containers are perfect for a range of light industrial, commercial, or domestic applications. Whether you need additional storage on a construction site, a secure shed for your backyard, or temporary storage for an event, these units offer the flexibility and convenience you need.
The side door option enhances accessibility, making it easier to load, unload and access stored items – even in hard-to-reach areas. Ideal for narrow spaces, tight corners, or sites where end-access isn’t possible.
The side door can be fitted on either side of the unit, offering versatility to suit your space requirements. With a right-hand hinged design that opens outward, the side door allows for easy entry and exit, making it the perfect solution for quick and efficient access to your stored goods.
Side Door Flat Pack Storage Container Features
- Single side door on long side (can be fitted on either side)
- Double side door option available
- Galvanised steel construction for robust and secure unit
- Double locking system
- Built in guttering system
- Lifting eyes included (empty lifting only)
- Can be linked to create longer or wider units using linking kits
Double Side Door Option
The double door option for our flat pack storage containers offers enhanced accessibility, making it easier to load and unload larger items or equipment. With doors that open fully, you can take advantage of the full width of the container, perfect for sites with more space or when you need quick and easy access to stored goods.
The double doors are designed with a secure double-locking system to ensure your items remain safe, while also providing a wide entry that can accommodate bulkier items.
End Door Flat Packs
End door flat packs are our standard option. The end opening doors also offer ease of use for many customers where a side door unit may not work. There is also a larger range of sizes and colours held in stock of these end opening units.
Linking Units
These side door flat packs can be linked with other flat pack units to create longer or wider storage spaces. They can be linked with other side door units, as well as our standard end door options.
Linking kits are available to join multiple units together, we offer both end linking and side linking. However the units can only joined in one direction.
Easy Assembly
All nut and bolts are provided with the unit as well as assembly instructions. It may take you a few hours to build if this is your first flatpack and all you need is a socket set & screwdriver.
With certain units, we can also offer an installation service. These units are the same as are standard end opening units and you can see our handy video showing how to assemble.
Construction Materials
Flooring is a pre-installed grade 3 OSB 18mm laminate flooring screwed into a galvanised steel profile frame.
The side walls and roof panels are made from 0.6mm box profile. The panels have been strengthened and have galvanised steel frame sections at their edges. The roof also comes with two integral gutters for rainwater dispersal at all four corners of the unit.
The door panel is also made from a 0.6mm box profile galvanised steel. It comes with two euro deadlocks with replaceable cylinders and a central roller catch. The door is right-hand hinged and outward opening.
We offer two near identical designs of the flat pack containers – either from our Birmingham or Surrey depot. The units have slightly different guttering systems, door handles & vary a little in size.Â
Please see the dimensions below for both designs.
| 3m x 2.1m | 4m x 2.1m | |
| Length (mm) | 3064mm | 2910mm | 4064mm | 3910mm |
| Width (mm) | 2149mm | 2149mm |
| Height Flat Packed (mm) | 300mm | 300mm |
| Height Assembled (mm) | 2093mm | 2093mm |
| Weight (kg) | 374kg | 354kg | 454kg | 545kg |
| Door Height (mm) | 1900mm | 1900mm |
| Single Door Width (mm) | 1250mm | 1250mm |
| Double Door Width (mm) | 1800mm | 1800mm |
We work with two different depots and depending which one we are using for you delivery will either be via a 26-ton hiab lorry to kerbside or via a 4×4 truck + trailer. If one of these is more suitable for you, please let us know otherwise we will quote the most cost-effective option for you.
Some sizes, colours and ranges of flat packs are only stocked in certain depots. If you require a particular unit, please let us know which and we will quote from the best depot.
All deliveries are Monday – Friday 8am – 6pm.
We are only able to deliver within Mainland UK. All deliveries are quoted with kerbside offload.
Shared Load Hiab Delivery
Our shared load delivery vehicle is generally a 26-tonne hiab equipped vehicle that is 12.3ft in height and 34ft in length. On occasions, an additional 20ft long trailer may be attached to the vehicle. Please check your site can accept the longest vehicle configuration.
The truck will need to stay on hardstanding ground at all times. There also needs to be sufficient room for the crane vehicle to setup and offload.
With these shared loads lead time can be up to 3 – 4 weeks for in stock items.
4×4 + Trailer Delivery

These are dedicated deliveries to your site only. You may need to help offload the unit from the trailer. Depending on the size of the unit you purchase you may need 2 or 3 people on site to help handball the panels off. If this is not possible, please let us know and we can arrange for an additional person to be sent to help offload the panels.
Lead time is around 7 – 10 working days for in stock items.
Installation is also available with this option.
Collection
All collections of units must be made on flatbed trucks or trailers that have a larger bed than the unit being collected. Failure to have the appropriate vehicle may result in being turned away. If you are unsure, please get in touch to avoid disappointment.

General Information
Delivery charges and estimated timescales are specified when you place an order. We make every effort to deliver goods within the estimated timescales, however delays are occasionally inevitable due to unforeseen factors. Budget Shipping Containers shall be under no liability for any delay or failure to deliver the products within estimated timescales.
Risk of loss and damage of products passed to you on the date when the products are delivered or on the date of first attempted delivery by us.
All goods must be signed for by an adult aged 18 years or over on delivery.
A failed delivery will be charged for or we will drop the flat pack at a nearby location and you will have to manually move the unit panel by panel to the assembly point or re-deliver on a flat bed vehicle at additional cost and you will have to move the panels as suggested.
Item |
Picture |
Price |
|---|---|---|
| Levelling feet (Adjustable / set of 4) | ![]() |
£40.00 + VAT |
| Motion Sensor Lights – See our Lighting video here | ![]() |
240mm – 47.50 + VAT / 600mm – £57.50 +VAT |
| Locking Bar with padlock | ![]() |
£60.00 + VAT |
| Forklift Feet (set of 4) – 90-second forklift feet video here | ![]() |
£57.00 + VAT |
| Folding Steel Ramp – 100-second ramp video here | ![]() |
£85.00 + VAT |
| Touch-up Spray | ![]() |
£21.00 + VAT |
| Lifting Eye & Rod Set | ![]() |
£70.00 + VAT |
| Linking Kit | £60 +VAT (galvanised) / £70 +VAT (powder coated) | |
| Self Fit Insulation Kit |  From £185 +VAT |
As we offer two slightly different ranges of flat pack containers, this does mean they also offer slightly differing shelving options. If you would like shelving for your flat pack container, please let us know how much of the unit you would like to shelve, along with how many tiers and what UDL (uniform distributed load).
Between the two ranges, we can offer 30kg – 75kg UDL. Depending on the units we are quoting we will quote as close to your desired configuration as is possible with the unit.
The maximum number of shelves that can be accommodated per pair of uprights is three.
The shelves are sump shelves, designed to capture any leaks. The shelf uprights are the vertical supports that hold the shelf arms in place onto which, you place your sump shelves. The shelf uprights simply snap into place so, no need to drill holes in the unit.
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