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⚡ Power up your outdoors with weatherproof confidence!
The Masterplug WBX-MS Weatherproof Electric Box is a robust, IP54-rated outdoor enclosure measuring 345 x 220 x 126.5 mm. Designed for secure, dust and water-resistant protection, it features a hinged cover with a side catch, five cable outlets, and wall mounting capabilities. Ideal for safely powering garden tools, outdoor lighting, and seasonal decorations, it meets British Standard EN62208:2011 and is trusted by thousands for reliable outdoor electrical safety.









| ASIN | B00B0X8CYC |
| Best Sellers Rank | 2,034 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Surface Mounted Cases |
| Brand | Masterplug |
| Brand Name | Masterplug |
| Colour | Grey |
| Customer Reviews | 4.6 out of 5 stars 6,546 Reviews |
| Finish Type | Unfinished |
| Finish type | Unfinished |
| Global Trade Identification Number | 05015056506289, 08944732601604 |
| Included Components | 1 x WEATHERPROOF BOX IP54 GREEN |
| Installation Type | Surface-Mount |
| Item Dimensions D x W x H | 34.5D x 22W x 12.7H centimetres |
| Item Type Name | Weatherproof |
| Item Weight | 1.96 Pounds |
| Manufacturer | Masterplug |
| Material | Plastic |
| Model Number | WBX-MS |
| Part Number | WBX-MS |
| Product dimensions | 34.5D x 22W x 12.7H centimetres |
| Specification Met | IP54 |
| Style | Weatherproof - Outdoors |
| Unit Count | 1.0 count |
A**N
Bone dry after 6 weeks
Works well if used properly. Really simple to use provided you respect its limits and use it responsibly. Used over Christmas as a junction box to put an old extension lead in. Plenty of room for transformers plugged into a 4g splitter and the sturdy plastic construction and decent seals have kept it bone dry over the last 5 weeks. Top product, bargain.
B**N
Weatherproof box
Good quality box ideal for keeping temporary outdoor sockets dry for Christmas tree lights etc.
I**N
Simple, good prodcut, does what it sets out to do
The only real tricky part relating to this is mounting it, however this is very much a reflection on the person fitting it than the prodcut itself. The box is of a good size and accomdates the dual socket extension which I was using. It also has a good depth, which is really useful given the height increase in plugs used for garden lighting etc. The product seals well, I have checekd it on numerous occasions after rain (including heavy rain) and the inside has been completely dry. It is a simple product, done well.
T**M
Just the job
Service good / quality good /price good / so all good to get job done 👍
S**E
Secure and waterproof enclosure. Designed well for the job.
These boxes are sturdy and waterproof. So easy to fit and are a great size. I have at least four or five in the garden.
P**R
Box Clever
Ok not tested yet in a serious shower but this looks to be a high quality product with a lot of thought gone into its design and construction. Very pleased with my choice and would certainly recomend to others. I was lucky to find this. Easy tansaction with Roual Mail delivery.
J**N
Masterplug WBX-MS Weatherproof Electric Box – Tough, Reliable, and Surprisingly Spacious
The Masterplug WBX-MS has quickly become a staple in my garden and outdoor setup. It’s one of those “buy once, use for years” pieces of kit — simple but built to do its job well. ✅ Why it works so well: • Truly weatherproof – After weeks of rain (UK-style drizzle and full-on downpours), not a single drop made it inside. The seals are tight and the clamping lid locks down firmly. • Good internal space – Easily fits a chunky plug extension and multiple adapters without it feeling cramped. There’s also room to run cables cleanly out the bottom while still sealing the lid. • Versatile mounting – It’s easy to secure to a wall, fence post, or even use freestanding if needed. • Great for temporary setups – Perfect for Christmas lights, patio heaters, outdoor entertainment gear, or a pond pump. 🛠️ What to be aware of: • Lid can be a bit stiff at first – But it softens up with use. That stiffness is probably what keeps the weather out! • Check your plug sizes – Very large timers or awkward plug designs might be a tight fit (though most standard ones are fine). 💬 Final thoughts: If you need a reliable, no-fuss weatherproof box for outdoor electrics, this one does the job excellently. Feels solid, protects well, and is more spacious than it looks at first glance. I’d confidently recommend it for both permanent installs and seasonal use.
L**R
Waterproof outdoor electric box.
Good sized medium box for use with a 4 way extension lead. Easy to use and waterproof. Does not come with an extension lead but that is what I wanted. Great price, robust and on time. 2 cable entries which require drilling and use of a protective cable grommet which is not supplied, however there are also 5 waterproof holes adequate for normal use. It is safe to use on grass or on a wall but I would recommend a base of thick wood if using on grass or hard floor. Small price to pay for safety.
S**3
Great quality
It’s a bit pricy, but it’s worth it. It offered the best protection for my LED light drivers in an outdoor lighting system.
E**R
Masterplug IP54 Weatherproof Electric Box
Produkt wie beschrieben und erfüllt seine Aufgabe. Alles super
M**T
Robust!!
Robust låda, perfekt för väderskyddade applikationer.
A**A
Perfetto
Fatta molto bene a tenuta praticamente stagna.
M**L
design flaw
tiny pin that holds one off the 2 hinges came off which made the box not weatherproof, the pin is extremally tiny and I was not able to locate it
Trustpilot
1 month ago
1 month ago