Mountfield Outdoor Storage Box Review
Mountfield is a trusted name in garden machinery, and their outdoor storage boxes offer a practical solution for keeping tools, cushions, and accessories dry and secure. This review examines the build quality, capacity, and value of the Mountfield range to help you choose the right model.
Quick answer
The Mountfield 350L storage box is the top pick for most users, offering a robust resin build, spacious interior, and a comfortable seating capacity of up to two people. For smaller gardens, the Mountfield 200L is a solid budget-friendly alternative.
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Research updated June 2026.
Mountfield 350L Outdoor Storage Box
Durable, weather-resistant, and spacious enough for garden tools and cushions.
Pros
- Large 350L capacity fits bulky items
- Sturdy resin construction resists rust and rot
- Doubles as a bench seat for two
Cons
- Assembly can be time-consuming
- Lock not included for security
Who is the Mountfield Outdoor Storage Box for?
The Mountfield outdoor storage box is designed for homeowners who need a reliable, weatherproof solution for storing garden tools, cushions, plant pots, and other outdoor essentials. It is particularly well-suited for those who want a box that can also serve as a seating area in the garden or on a patio. The range includes smaller models for compact spaces and larger units for bigger gardens or sheds.
Performance and Build Quality
Mountfield storage boxes are made from high-density resin, which is UV-stabilized to prevent fading and cracking in direct sunlight. The material is also waterproof, keeping contents dry during rain. Owner reviews consistently highlight the sturdy feel of the lid and base, with the 350L model supporting up to 250kg when used as a seat. The lid features a gas-strut mechanism for smooth opening and closing, reducing the risk of slamming shut on fingers.
The boxes are designed with a slight slope on the lid to allow rainwater to run off, preventing pooling. The base has raised feet to keep the box off damp ground, further protecting the contents. Some users note that the assembly instructions could be clearer, but the process is straightforward with basic tools. The 350L model typically takes 30 to 45 minutes to assemble.
Alternatives to Mountfield Outdoor Storage Boxes
If the Mountfield box does not meet your needs, consider the Keter Store-It-Out range, which offers similar resin construction with a slightly different aesthetic. For a more budget-friendly option, the Suncast 100L box is a good choice for smaller items. For those seeking maximum security, a metal storage box from brands like Sealey or Clarke may be more appropriate, though they lack the seating feature.
What to Check Before Buying an Outdoor Storage Box
Before purchasing, measure the space where the box will sit to ensure it fits. Consider the volume of items you need to store; a 200L box is suitable for cushions and small tools, while 350L or larger is better for lawnmowers and bulky equipment. Check the weight limit if you plan to use it as a seat. Also, verify that the material is UV-resistant and waterproof for long-term outdoor use.
Mistakes to Avoid When Choosing a Storage Box
One common mistake is underestimating the size needed, leading to a box that is too small. Another is ignoring the weight limit for seating, which can cause the lid to break. Avoid boxes made from thin plastic that may warp or crack in extreme weather. Finally, do not assume a lock is included; many boxes require a separate padlock for security.
FAQs
Is the Mountfield storage box waterproof?
Yes, the resin construction and overlapping lid design keep contents dry during rain. The base also has raised feet to prevent ground moisture ingress.
Can I sit on the Mountfield storage box?
Yes, the 350L model supports up to 250kg, comfortably seating two adults. Smaller models have lower weight limits, so check the specifications.
Does the Mountfield box come with a lock?
No, the box has hasps for a padlock but does not include one. You will need to purchase a separate padlock for security.
How long does it take to assemble the Mountfield box?
Assembly typically takes 30 to 45 minutes for the 350L model. The smaller models are quicker to put together.
What is the warranty on Mountfield storage boxes?
Mountfield offers a 1-year warranty on their storage boxes against manufacturing defects. Some retailers may offer extended warranties.
Can the Mountfield box be left outside in winter?
Yes, the UV-stabilized resin is designed to withstand freezing temperatures and snow. Ensure the box is on a level surface to prevent damage.
What size Mountfield box should I buy for a lawnmower?
For a standard push mower, the 350L model is recommended. For larger ride-on mowers, consider a bigger storage solution or shed.
Is the Mountfield box easy to move when empty?
Yes, the resin material is lightweight, and the box can be moved by one person when empty. It has handles on the sides for easier lifting.
Does the Mountfield box fade in the sun?
The resin is UV-resistant, so fading is minimal over time. Darker colors may show slight fading after several years of direct sun exposure.
Can I paint the Mountfield storage box?
Painting is not recommended as it may void the warranty. The resin is pre-colored and designed to maintain its appearance without painting.
How does Mountfield compare to Keter storage boxes?
Both use similar resin materials, but Mountfield boxes often have a higher weight limit for seating. Keter offers more color options and slightly lower prices.
Where is the Mountfield storage box made?
Mountfield products are designed in the UK and manufactured in China, ensuring quality control and cost-effective pricing.
Our verdict
The Mountfield 350L outdoor storage box is the best overall choice for most gardens, offering excellent capacity, durability, and seating. For smaller spaces or tighter budgets, the Mountfield 200L is a reliable and affordable alternative.