Flat-Top Lockers

This collection holds 30 Probe flat-top locker configurations across five ranges: Standard Metric (6), Standard Imperial (9), PowerBox charging (9), Vision Panel (5) and Perforated (1). Every one is full height — 1800 mm on the metric, PowerBox, vision panel and perforated ranges, and 1780 mm on Standard Imperial, built from cold-rolled mild steel with a powder-coated finish, and fitted with a Type A cam lock on every compartment as standard. All are UK manufactured by Probe.

A height difference that is not in the product names and matters for a mixed run: the Standard Imperial lockers are 1780 mm tall, not 1800 mm. All 19 imperial products in the catalogue state 1780; all 48 metric, PowerBox, vision panel and perforated products state 1800. So metric and imperial nests differ by 20 mm in height as well as 5–7 mm in depth — a mixed run will not line up at the top or sit flush at the face. The imperial body exists to drop into an existing 1780 mm installation without re-planning the wall; if you are not matching one, specify metric.

The flat top is the standard square top. It gives you a usable surface across the run, keeps the lowest overall height, and lets lockers sit continuously beneath a shelf, window line or low ceiling. If you want to stop items and dust collecting on top, the sloping-top range is the same locker with a pitched top.

A correction to what this page previously said

Until today this page offered "cam, hasp, coin-return or electronic locking" and described the bodies as "welded sheet steel". We have audited all 67 Probe lockers in the catalogue against their published specifications. Across those 67 products:

• "cam lock" appears 201 times.
• "cold-rolled" appears 182 times and "mild steel" 182 times. "Powder" appears 197 times.
• "hasp", "padlock", "coin-return", "electronic", "welded" and "sheet steel" each appear zero times.

So the specification is a Type A cam lock, cold-rolled mild steel, powder-coated. There is no hasp-and-staple, no padlock provision, no coin-return mechanism and no electronic lock on any Probe locker we sell, and the bodies are formed rather than welded. If you need padlock or coin-return locking, this range will not do it as supplied — that is worth knowing before an order, not after. Our guide to locker lock types covers what the alternatives are and where they come from.

Metric or imperial: the same locker, exactly 20% apart

The Standard range comes in two size standards, and the difference between them is between one and seven millimetres:

Metric (W × D)	Imperial (W × D)	Difference
300 × 300 mm	305 × 305 mm	+5 mm each way
300 × 380 mm	305 × 381 mm	+5 / +1 mm
300 × 450 mm	305 × 457 mm	+5 / +7 mm
380 × 380 mm	381 × 381 mm	+1 mm each way
380 × 450 mm	381 × 457 mm	+1 / +7 mm
450 × 450 mm	457 × 457 mm	+7 mm each way

We compared every directly comparable configuration on this page — three door counts, two widths, six sizes, eighteen matched pairs — and the imperial locker costs exactly 20.0% more. Every time.

Configuration	Size	Metric	Imperial	Difference
10-door triple	300/305 × 300/305	£1,621.61	£1,945.93	+£324.32
10-door triple	300/305 × 450/457	£1,704.88	£2,045.86	+£340.98
8-door triple	300/305 × 300/305	£1,322.62	£1,587.14	+£264.52
6-door triple	300/305 × 300/305	£990.64	£1,188.77	+£198.13
10-door double	450/457 × 450/457	£1,330.68	£1,596.83	+£266.15
8-door double	380/381 × 380/381	£1,035.41	£1,242.48	+£207.07

The recommendation is straightforward: unless you are matching an existing imperial run, specify metric. A 20% premium for five millimetres is not buying you anything. The one thing it does buy is compatibility — ten 457 mm imperial nests are 70 mm wider than ten 450 mm metric nests, which is enough to lose a wall recess or foul a door frame, and metric and imperial nests cannot be mixed in one run and give a flush face. Match what is already installed, or start metric and stay metric.

Browse them separately: standard metric lockers and standard imperial lockers.

Price per compartment: the cheapest locker on the page is the most expensive one

The "from" price on this collection is £324.04. That is the single-door Vision Panel locker — and at £324.04 per compartment it is the dearest thing here by a wide margin. The cheapest is the Standard Metric 10-door double-width at 300 mm, which works out at £52.89 per compartment. That is a factor of more than six, on lockers built from the same steel to the same full carcass height.

Configuration	Compartments	From	Per compartment
Standard Metric 10-door double (300 mm)	20	£1,057.87	£52.89
Standard Metric 10-door triple	30	£1,621.61	£54.05
Standard Metric 6-door triple	18	£990.64	£55.04
Perforated 6-door triple	18	£1,040.17	£57.79
Standard Imperial 8-door double	16	£1,005.19	£62.82
PowerBox 16-door, mains charging	16	£1,058.65	£66.17
Standard Imperial 3-door triple	9	£889.15	£98.79
Vision Panel 6-door	6	£505.60	£84.27
Vision Panel 1-door	1	£324.04	£324.04

Median rates by range, for orientation: Standard Metric £55.07 · Perforated £57.79 · Standard Imperial £66.13 · PowerBox £109.15 · Vision Panel £131.33.

The rule that follows is the same one that governs every nested locker range: buy the largest nest the wall will take. Doors are cheap; carcasses are not. Three columns of ten share their internal walls, so a triple-width nest costs materially less per user than three single-width bays holding the same people. Double width sits between the two.

Two size gaps worth knowing before you specify

There is no metric 6-door double-width flat-top locker. Imperial offers one — the 6-door double at £801.18, which is the cheapest complete locker bank on this page. Metric offers 6-door only in triple width. If your headcount points at a 12-compartment bay, imperial is the only flat-top route to it, and the 20% rule does not apply because there is nothing to compare it against.

And the metric double-width range is split across two separate listings. One covers 300 mm widths, the other 380–450 mm. They differ by £154.48 at the base and appear as two products with similar names, so check which width band you are looking at before comparing prices. Imperial double-width, by contrast, carries all six sizes in a single listing.

Depth is cheap. Colour is free.

Two facts that change what a sensible specification looks like:

Going deeper costs very little. On the metric range, moving a 300 mm-wide column from 300 mm to 450 mm deep — half as much again of usable space — costs between £27.96 and £135.67 depending on the configuration, or roughly 5% to 10%. On the Vision Panel 6-door the whole 150 mm of extra depth is £27.96. If there is any prospect of coats, helmets, bags or full-suit PPE going in, take the depth.

Colour costs nothing at all. Every locker here is offered in three carcass colours (Silver/Grey, Black, White) and seven door colours (Red, Yellow, Blue, Green, Black, White, Silver) — 21 combinations — and we checked every one at a fixed size: they are all the same price. That is also the arithmetic behind the 63, 84 and 126 variant counts on the listings: 21 colour combinations multiplied by the number of sizes offered. Choose the colour that suits the room, not the budget.

PowerBox charging: nine of the thirty, and the pricing is counter-intuitive

Nearly a third of this collection is charging lockers. Each PowerBox compartment combines a Type A cam lock with an on-board charging outlet, on certified internal wiring with a single mains feed and an external safety isolator, CE/UKCA marked. Three charging types are offered:

Doors	3-pin UK mains	USB-A + USB-C	Mains + USB
16	£1,058.65	£1,661.48	£1,770.61
10	£838.96	£1,090.99	£1,164.50
8	—	£873.18	£987.31
4	—	—	£975.72

USB is the expensive part, not mains. At 16 doors, USB costs £602.83 more than mains; at 10 doors, £252.03 more. But adding mains on top of USB costs only £109.13 at 16 doors and £73.51 at 10 — around 6 to 7%. So if USB is on the specification at all, take the combined unit; you are getting three-pin sockets for almost nothing.

The sharper finding is at the bottom of the range. The 4-door mains-and-USB locker is £975.72. The 8-door is £987.31. That is £11.59 for four additional charging compartments — about £2.90 each — against £243.93 per compartment on the 4-door. There is very little reason to buy the 4-door unless the wall genuinely will not take the 8.

And a charging locker can undercut a plain one per compartment. The 16-door mains-only PowerBox works out at £66.17 per compartment — cheaper than four Standard Imperial configurations on this page that charge nothing at all: the 6-door double (£66.77), 5-door triple (£68.36), 4-door triple (£79.52) and 3-door triple (£98.79). If the room needs charging and the door count suits, the charging locker is not necessarily the expensive option.

Charging lockers are split by standard elsewhere on the site: UK mains, USB-A and USB-C, with the full range in PowerBox charging lockers and the PowerBox range. Our laptop charging locker buying guide covers how to size a charging bank against a device fleet.

Vision panel and perforated doors

Vision Panel lockers carry a reinforced acrylic panel in a powder-coated steel surround, letting staff check contents without unlocking. On flat top they are offered in 300 mm width only, in 1, 2, 3, 4 and 6 doors — so they are a single-column product for a specific safeguarding or contraband-control need, not a way to fit out a changing room. Doors are reinforced and ventilated. See the full vision panel range.

Perforated doors are laser-cut for constant airflow through every compartment, with the carcass and floor in full solid steel and the doors reinforced despite the perforation. This is the right specification for wet or damp kit — used PPE, gym clothing, swimming costumes, fire and ambulance station gear. But note the constraint: on flat top there is exactly one perforated configuration — the 6-door triple width, 18 compartments, 300 mm columns. The sloping-top range carries three. If you need ventilation and a flat top, that one configuration is your option; if you need ventilation and more choice, look at sloping top or the wider perforated locker range.

What is in this collection

• Standard Metric — 6 configurations. 6, 8 and 10 doors in triple width; 8 and 10 doors in double width, split across 300 mm and 380–450 mm listings. Reinforced doors with ventilation slots and a coat hook in every compartment.
• Standard Imperial — 9 configurations. 3, 4, 5, 6, 8 and 10 doors in triple width; 6, 8 and 10 doors in double width, each carrying all six imperial sizes.
• PowerBox charging — 9 configurations. 4, 8, 10 and 16 doors, single column, in mains, USB and combined variants.
• Vision Panel — 5 configurations. 1, 2, 3, 4 and 6 doors, 300 mm width.
• Perforated — 1 configuration. 6-door triple width.

Door count is per column: a 10-door triple-width nest is 10 doors across 3 columns, giving 30 compartments. The same logic applies at 16, 8, 5, 4, 3, 2 and 1 door. Fewer, taller doors suit coats and full-height kit; more, smaller doors suit phones, wallets and shift use.

What the product data does not state

Across all 30 products on this page, the specification gives no warranty period, no lead time, no stock status, no master-key or suiting option, and no steel gauge. Each of those terms appears zero times. We are not going to invent them. If a warranty period or a suited master-key system is a condition of your order, ask us to confirm it with Probe in writing before you commit — and treat any competitor quoting a figure on a comparable Probe product as something to see the document for.

Where to go next

The full lockers category and the Probe collection hold every format, including wide-format lockers. For the decision itself, start with how to choose metal lockers for the workplace, then the guides for your setting: school lockers, gym and leisure lockers and staff and workplace lockers. If you are fitting out a changing room rather than a corridor, plan the seating alongside the lockers using our changing room layout guide and the cloakroom benches range. And if what you actually need is a cupboard rather than a locker bank, steel cupboards versus lockers and the industrial cupboards range will settle it.