The best cable management boxes

This is a one-product list. That is not because we ran out of time; it is because of a string of characters:

BS EN 60670-22:2006.

That is a named, third-party, verifiable safety standard for enclosures for electrical accessories, and D-Line states its Cable Tidy Unit is safety tested and certified to it. Across every cable product we researched for this site — every tie, clip, sleeve, tray and box — it is the only one that cites a real external standard by name.

In a category where the product is a plastic box containing live mains connections, that fact is worth more than any other spec on the page.

Why a standard matters more here than anywhere else

Most of what we cover is furniture-adjacent. If a monitor arm’s weight rating is optimistic, you find out when your monitor sags. Annoying, recoverable.

A cable box is different in kind. You are putting a power strip, its plugs and several metres of mains cable inside a sealed plastic container and then putting it somewhere you cannot see it. The plastic’s composition is not an aesthetic question at that point.

Which makes the state of this category genuinely poor. The typical listing offers “flame retardant material” — two words, no standard, no document, no test, and in several cases no manufacturer website behind them at all. That phrase is doing an enormous amount of work for something nobody has to substantiate.

D-Line names its material (electrically-safe ABS) and cites its certification. That is a low bar. It is also, in this category, an almost unique one.

The UK/US split

Here is the wrinkle, and it is worth your attention if you are buying in the States.

D-Line’s UK page states that the Cable Tidy Units are made in the UK from electrically-safe ABS and have been safety tested and certified to BS EN 60670-22:2006. Clear, specific, checkable.

D-Line’s US page for the same range does not name a standard anywhere. It describes the boxes as solutions to contain power strips and cord clutter, and that is about the extent of the technical disclosure.

Same company. Same product. Two different levels of information depending on which page you land on.

We are not making an accusation out of this — BS EN 60670-22 is a British and European standard, and it would be odd to lead with it in US marketing. But if you are a US buyer trying to verify what you are getting, your own market’s page will not tell you, and you deserve to know that the claim exists at a different URL rather than assuming the silence means nothing was tested. Both pages are in our sources. Read either.

The two numbers we refused to print

This box comes with two widely-circulated figures that are not on our page, and both omissions are deliberate.

“Holds a power strip up to 13.4 inches.”You will find this everywhere. We could not find it on a single D-Line page. It appears to be retailer copy that has been repeated until it acquired the texture of a specification. It may even be accurate — but we cannot show you where it came from, so it is not going next to figures we can. Instead we give you D-Line’s own external dimensions: 16.5 × 6.5 × 5.25″for the large box, which their UK page publishes in metric as 415 × 165 × 135mm. Those two agree with each other, which is a small reassurance in a category with very little of it.

One caveat on that, in your favour: those are external dimensions. The usable interior is smaller by the wall thickness, and your strip needs room for plugs, which stand proud. Measure your strip with everything plugged in.

“970°C for 2 hours.”This is a glow-wire fire figure that does circulate under the D-Line name, and it is real — but it belongs to D-Line’s separate Safe-D trade range, not to this consumer cable box. The two are easy to blur: same brand, same category, adjacent pages.

Attaching that number to this product would be the most dangerous thing we could do on this entire site. It would tell you a plastic box full of mains connections has a fire rating that it has never claimed, and someone might make a decision on it. So: this box has no published fire rating, because it does not claim one, and a certification for electrical enclosures is not the same thing as a fire rating.

What the standard actually covers — and what it doesn’t

We should be careful not to oversell a string of characters just because it is the only one in the category.

BS EN 60670-22:2006 sits in the 60670 family, which covers boxes and enclosures for electrical accessories— the 22 part concerning connecting boxes and enclosures. That is a real, externally-defined, testable specification, and a manufacturer stating its product is certified to it is making a claim it can be held to. That is meaningfully different from “safety tested,” which is a phrase anyone can type about anything.

What it is notis a fire rating, and the distinction matters because the two get blurred constantly in this category. A certification for electrical enclosures and a glow-wire fire performance figure are different tests answering different questions. D-Line has products that carry the latter — the Safe-D trade range — and this box is not one of them.

The honest limit of our own knowledge, stated plainly: we have notread BS EN 60670-22:2006. Like most standards it sits behind a paywall. We can tell you D-Line cites it by name, which is checkable and which nothing else here does. We cannot tell you what its test regime involves, and we are not going to imply we can by describing it in confident detail we do not have. Naming the standard is D-Line’s claim; verifying our reading of the standard is not something we can offer you, and pretending otherwise would be the same laundering we criticise elsewhere on this site.

What a cable box does and does not do

It contains a power strip and the nest of plugs around it, out of sight and out of the way of feet, pets and vacuum cleaners. It is genuinely good at that, and on a desk stranded in the middle of a room it is doing real work — that is the setup where the strip has nowhere to hide.

It does not make an overloaded strip safe. It does not fix a daisy chain. It is not a substitute for an electrician if something in your setup is warm to the touch. It is a tidy plastic box with a decent certification, and the certification is the reason it is here rather than a competitor.

What we can’t tell you

We have not owned one. We cannot tell you whether the lid stays shut with a fat strip inside, whether the slots take a chunky wall wart, or how the ABS looks after three years in sunlight. Those need hands and time, and we have neither.

What we can tell you is that in a category built on the words “flame retardant” and almost nothing else, exactly one manufacturer names a standard and puts its material in writing — and that the standard is hiding on the wrong continent’s website.