Usable internal depth is what turns a cabinet into a mistake

The best network cabinets for 2026

A cabinet is bought on internal dimensions, and the one that catches people out is depth. The 19-inch mounting width is fixed by convention and the height in rack units of 44.45 mm each is printed on every listing, but the usable depth between the front and rear mounting rails is what decides whether a switch with a rear-facing power inlet lets its door close. Wall cabinets are shallow by design and a great deal of equipment simply does not fit them; floor cabinets are deep and occupy the footprint of a wardrobe. Read then the mounting rails: two posts or four, adjustable in depth or fixed, and whether the holes are square for cage nuts or threaded. Ventilation follows — a mesh or louvred door moves air on its own, a solid glass door looks tidier and does not, and roof cutouts for fans are published with their dimensions. Access counts for more than it seems inside a cupboard, and a removable side panel or a hinged wall frame turns an impossible cabling job into an ordinary one. The stated load rating is published as a static figure, and a cabinet filled with drives approaches it sooner than expected. Finally the entries: brush strips or knockouts top and bottom, an earth stud, and a lock. Flat-packed cabinets ship cheaply and are assembled on site; welded ones arrive built and take two people up a staircase. We compare rack units and mounting width, usable internal depth, wall or floor mounting, rail arrangement, door type and ventilation, stated load rating, cable entries and lock type.

The ones worth keeping in the drawer

1. 

   DIGITUS 10-inch 6U wall cabinet, 330 × 312 × 300 mm, lockable glass door

   The smallest cabinet in this hub and the only 10-inch one, sized for a flat or a small office where a full rack would be absurd, with an earthing bolt and cable entries top and bottom.

   Rack units

   Six — stated in the title, alongside the outer dimensions of 330 × 312 × 300 mm in height, width and depth

   Mounting width

   10-inch — stated in the title and in the first bullet, and given as 254 mm in the fifth, which lists the DIGITUS components available in that format: patch panels, LAN and PoE switches, socket strips, cable management and shelves

   Usable internal depth

   Not published on the listing — the title gives an outer depth of 300 mm and no bullet gives a rail-to-rail figure. The fourth says the rails can be fitted in three different positions, which changes the usable depth without stating any of the three values

   Wall or floor mounting

   Wall — the first bullet calls it a 10-inch wall enclosure for structured IT cabling, suited to a home or a small office environment

   Rail arrangement

   Profile rails adjustable to three different positions — stated in the fourth bullet. The number of rails and whether they are square-hole or threaded is not published on the listing

   Door type

   Lockable glass — stated in the second bullet, which gives visual inspection of a router, a NAS or a switch as the reason for the glazing and protection from unauthorised access as the reason for the lock

   Ventilation

   Not published on the listing — no vents, no louvres and no fan aperture is named anywhere. The door is glass, which is the arrangement that moves the least air, and the third bullet describes the cable entries without mentioning airflow

   Stated load rating

   Not published on the listing — no static load figure appears. The fourth bullet names a steel housing and an earthing bolt, and gives no weight the cabinet will carry

   Cable entries

   In the floor and the roof — stated in the third bullet, which says power and network cable can be brought into the mini rack from below as well as from above

   Lock type

   Not published on the listing — the door is described as lockable in the second bullet and no lock pattern, key type or barrel is named

   Amazon reference

   B00CBNY4XI (same reference on 6 Amazon marketplaces)

   EAN

   4016032331421

   • The only 10-inch cabinet here, which is the format that suits a flat rather than a plant room
   • Rails adjustable to three depth positions inside a shallow enclosure
   • No usable internal depth published, on the cabinet where the margin is smallest

   Best for: A flat or a small office where the whole network is a router, a switch and a 10-inch patch panel, and the cupboard has 300 mm to give.

   ≈ 58 €

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2. 

   EXTRALINK 19-inch 9U cabinet, 400 mm deep, 340 mm of equipment depth stated, 60 kg load

   The cabinet that answers the question its neighbours dodge: it publishes not just its own 400 mm depth but the 340 mm of equipment that will go inside it, and ships a shelf in the same box.

   Rack units

   Nine — stated in the title, alongside a depth of 400 mm

   Mounting width

   19-inch — stated in the title and repeated in the first and third bullets, which call it a 19-inch rack and a 19-inch network cabinet

   Usable internal depth

   Given as an equipment depth rather than a rail measurement: the third bullet says the cabinet takes the commonest network devices up to a depth of 340 mm, naming switches, servers, patch panels and CCTV recorders. The cabinet itself is 400 mm deep, so the 60 mm difference is stated by implication rather than as a rail-to-rail figure

   Wall or floor mounting

   Either — the fifth bullet says it can be hung on a wall or stood free, and calls that complete flexibility regardless of the size and layout of the room

   Rail arrangement

   Not published on the listing — no number of rails, no depth adjustment and no hole pattern is named. The first bullet says the full mounting hardware is included and the assembly takes about fifteen minutes with no specialist knowledge

   Door type

   Lockable, with a 180-degree opening stated in the title. The second bullet gives protection of the equipment as the reason for the lock. The door material is not published on the listing

   Ventilation

   Ventilation slots — named in the fourth bullet together with cable entries, credited with optimal cooling of the equipment and a tidier cable arrangement. No fan aperture and no vent dimension is given

   Stated load rating

   60 kg — stated in the title as the carrying capacity

   Cable entries

   Named in the fourth bullet as cable feed-throughs alongside the ventilation slots, credited with an aesthetically pleasing cable arrangement. Their number, position and whether they carry brush strips is not published on the listing

   Lock type

   Not published on the listing — the door is described as lockable in the second bullet and no lock pattern, key type or barrel is named

   Amazon reference

   B0G4RY2NCM (same reference on 5 Amazon marketplaces)

   EAN

   5907207228792

   • Publishes the equipment depth it accepts, 340 mm, which is the figure a buyer actually measures against
   • A shelf is included, so the router with no rack ears has somewhere to sit on day one
   • The rail arrangement is nowhere described, so nothing says whether the rear is supported

   Best for: A nine-unit installation in a room where it might be wall-hung now and stood on the floor later, with equipment no deeper than 340 mm.

   ≈ 62 €

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3. 

   STALFLEX 19-inch 3U cabinet, 180 mm depth, 90-degree door, space for a 120 mm fan

   The shallowest cabinet in this hub at three rack units, sold for a recorder or a pair of patch panels, and the only one that names the size of fan its ventilation will accept.

   Rack units

   Three — stated in the title, alongside 180 mm and the 19-inch width

   Mounting width

   19-inch — stated in the title and in the first bullet, which calls it a 19-inch network cabinet

   Usable internal depth

   Not published on the listing as such — the title and the first bullet both give 180 mm without saying whether that is the cabinet or the room inside it. The first bullet says the depth gives space for servers, DVR recorders or several patch panels at once, which reads as a claim about what fits and is written against the same 180 mm figure

   Wall or floor mounting

   Not published on the listing — no bullet says whether the cabinet is hung, stood or either. The second describes powder-coated steel and a professional appearance in a server environment, and none of the five names a mounting method

   Rail arrangement

   Mounting rails with cut-outs — the fourth bullet names cable feed-throughs and recesses in the mounting rails as its cable management. The number of rails, their depth adjustment and their hole pattern is not published on the listing

   Door type

   A door opening through 90 degrees from top to bottom, stated in the third bullet as giving unrestricted access to all internal components. The door material is not published on the listing

   Ventilation

   Side ventilation openings, with space for a 120 × 120 mm fan — stated in the fifth bullet, which is the only place on this shelf where a fan aperture is given a dimension

   Stated load rating

   Not published on the listing — no static load figure appears. The second bullet names high-grade powder-coated steel and durability instead

   Cable entries

   Cable feed-throughs and recesses in the mounting rails — stated in the fourth bullet, which adds two cable ties to the delivery

   Lock type

   Not published on the listing, and no lock of any kind is named. It is the only cabinet on this shelf whose door is never described as lockable

   Amazon reference

   B0D3LYFT23 (same reference on 5 Amazon marketplaces)

   EAN

   5903351267717

   • Names the fan size the ventilation will take, 120 × 120 mm, which no other cabinet here does
   • Three rack units at 180 mm goes where nothing else on this shelf fits
   • No lock named anywhere, alone among the seven cabinets here

   Best for: A shallow run of two or three rack units in a corridor or a cupboard where 400 mm of cabinet would never go on the wall.

   ≈ 80 €

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4. 

   HB-DIGITAL 19-inch 12U wall cabinet, 400 mm deep, 170–270 mm mounting depth, 60 kg load

   Twelve rack units on a wall with the one figure most cabinets omit — a mounting depth given as a range rather than a promise — plus a brush strip at the entries and a door that swings clear through 200 degrees.

   Rack units

   Twelve — stated in the title and in the first bullet

   Mounting width

   19-inch — stated in the title and in the first bullet

   Usable internal depth

   A mounting depth adjustable from 170 mm to 270 mm — stated in the first bullet as the range offered for different network devices, inside a cabinet the title gives as 400 mm deep. It is the only cabinet on this shelf to publish its usable depth as a range with both ends named

   Wall or floor mounting

   Wall — stated in the title and in the first bullet, which calls it suitable for wall mounting

   Rail arrangement

   Depth-adjustable across the 170 to 270 mm range named in the first bullet. The number of rails, whether the rear is supported and the hole pattern is not published on the listing

   Door type

   Lockable glass with a 200-degree opening angle — stated in the title and in the second bullet, which gives protection from unauthorised access and easy visual inspection as its two reasons

   Ventilation

   Ventilation slots integrated in the roof for improved air circulation, with a fan described as retrofittable — stated in the fourth bullet. No fan size and no aperture dimension is published on the listing

   Stated load rating

   Up to 60 kg — stated in the title and in the third bullet, alongside a 1.2 mm steel sheet powder-coated in RAL 9005 black

   Cable entries

   In the roof and the floor, with a brush strip — stated in the fifth bullet for clean and flexible cable routing. It is the only brush strip named on this shelf

   Lock type

   Not published on the listing — the glass door is described as lockable in the title and in the second bullet and no lock pattern, key type or barrel is named

   Amazon reference

   B0DK5PTZY8 (same reference on 6 Amazon marketplaces)

   EAN

   4063328056544

   • The mounting depth is published as a range with both ends named, which no other cabinet here does
   • A brush strip at the cable entries, named nowhere else on this shelf
   • Arrives unassembled, stated in the title and nowhere expanded on

   Best for: A twelve-unit wall installation where the deepest device is under 270 mm and somebody is willing to build the cabinet before hanging it.

   ≈ 95 €

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5. 

   KOSCOM CONNECT 19-inch 6U wall cabinet, 450 mm deep, 100 kg load, delivered assembled

   The heaviest-rated cabinet on this shelf at a hundred kilograms, delivered assembled rather than flat, with side panels that come off and two separate earthing points for a screened installation.

   Rack units

   Six — stated in the title, alongside a depth of 450 mm

   Mounting width

   19-inch — stated in the title and in the first bullet

   Usable internal depth

   Not published on the listing — 450 mm is given as the cabinet depth and no rail-to-rail or equipment figure appears. The second bullet says the profile rails are depth-adjustable without naming the range they cover

   Wall or floor mounting

   Wall — the third bullet says the cabinet is fully assembled and quickly installed on the wall

   Rail arrangement

   Depth-adjustable profile rails — stated in the second bullet alongside removable side panels for better access. The number of rails and the hole pattern is not published on the listing

   Door type

   Lockable glass — stated in the second bullet as providing additional protection, alongside the removable side panels

   Ventilation

   Ventilation slots — stated in the fourth bullet for optimal airflow, with the addition that they can be supplemented by an active fan on the roof. No fan size and no aperture dimension is published

   Stated load rating

   100 kg — stated in the first bullet, which describes robust powder-coated steel sheet securing the network infrastructure. It is the highest load figure on this shelf

   Cable entries

   Through the roof, the rear or the floor — stated in the third bullet, which is the only listing here to name a rear entry as well as the top and bottom

   Lock type

   Not published on the listing — the glass door is described as lockable in the second bullet and no lock pattern, key type or barrel is named

   Amazon reference

   B0DMTL8SRC (same reference on 6 Amazon marketplaces)

   EAN

   4043089463119

   • A hundred kilograms, the highest load rating on this shelf
   • Arrives fully assembled, which no other cabinet here promises
   • No usable internal depth published, and the rails adjust across an unnamed range

   Best for: A six-unit wall installation carrying real weight — a small server, a UPS, a stack of drives — put up by somebody who does not want to build a cabinet first.

   ≈ 100 €

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6. 

   Tecmojo 19-inch 18U wall cabinet, 450 mm deep, lockable glass door and side panels, flat-packed

   The tallest cabinet in this hub by six rack units, an eighteen-unit wall enclosure whose side panels lock as well as its door, and whose five bullets never mention a vent, a load or a cable entry.

   Rack units

   Eighteen — stated in the title and in the first bullet, which calls it a high-capacity cabinet with 450 mm depth for professional IT, server and network installations

   Mounting width

   19-inch — stated in the title and in the first and third bullets

   Usable internal depth

   Not published on the listing — 450 mm is given as the cabinet depth in the title and in the first bullet, and no rail-to-rail figure, equipment depth or internal dimension appears anywhere

   Wall or floor mounting

   Wall — stated in the title and in the first bullet as a wall network cabinet

   Rail arrangement

   Not published on the listing — no number of rails, no depth adjustment and no hole pattern is named. The fifth bullet says the cabinet is delivered flat-packed with all mounting materials for a quick installation

   Door type

   Lockable glass — stated in the title and in the second bullet, which adds removable side panels that are also lockable, for protection against unauthorised access and for easy maintenance

   Ventilation

   Not published on the listing — no vents, no louvres, no perforation and no fan provision is named in any of the five bullets. It is the only cabinet on this shelf that never mentions airflow

   Stated load rating

   Not published on the listing — no static load figure appears. The fourth bullet names a robust steel construction with high load-bearing capacity and long-term professional use, and gives no weight

   Cable entries

   Not published on the listing — no entry, gland, knockout or brush strip is named. The third bullet lists what the cabinet is optimised for, and the cable route into it is never described

   Lock type

   Not published on the listing — the front door and the side panels are described as lockable in the second bullet, and no lock pattern, key type or barrel is named

   Amazon reference

   B0GDP1V8S7 (same reference on 6 Amazon marketplaces)

   EAN

   5061116020103

   • Eighteen rack units, six more than anything else on this wall-mounted shelf
   • The side panels lock as well as the door, which no other cabinet here offers
   • Ventilation is never mentioned, on the largest cabinet in this hub

   Best for: A large wall installation where the height is the requirement and the buyer is prepared to establish the missing figures with the seller first.

   ≈ 190 €

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7. 

   DSIT 19-inch 9U wall cabinet, 600 × 450 × 500 mm outside, 500 × 350 × 400 mm inside

   The dearest cabinet in this hub and the only one that answers the question the whole shelf turns on: it publishes an internal depth of 350 mm beside an external one of 450 mm, in the same bullet.

   Rack units

   Nine — stated in the title and in the first bullet, which calls it a solid 9U 19-inch wall-mounted network cabinet

   Mounting width

   19-inch — stated in the title and in the first and second bullets, the latter naming four adjustable 19-inch mounting rails

   Usable internal depth

   350 mm — the fifth bullet gives the internal dimensions as 500 × 350 × 400 mm in width, depth and height, against outer dimensions of 600 × 450 × 500 mm. It is the only listing on this shelf that publishes an internal figure for all three axes

   Wall or floor mounting

   Wall — stated in the title and in the first bullet, which includes a drilling template in the delivery

   Rail arrangement

   Four flexibly adjustable 19-inch mounting rails — stated in the second bullet. It is the only cabinet on this shelf to publish a rail count, and four rails is the arrangement that supports equipment at the rear as well as the front

   Door type

   Lockable glass with a reversible hinge — the second bullet names a changeable door stop for individual adaptation, and the fourth a lockable door with a lock

   Ventilation

   Ventilation holes in the floor and top plates for optimal air circulation — stated in the third bullet, with the fourth adding a provision for fan mounting. No fan size and no aperture dimension is published

   Stated load rating

   Not published on the listing — no static load figure appears. The fifth bullet gives the cabinet’s own weight as 19 kg and the first calls the construction solid

   Cable entries

   Above and below — stated in the fourth bullet as cable feed-throughs at the top and the bottom for tidy cabling, alongside the lockable door

   Lock type

   Not published on the listing — the fourth bullet names a lockable door with a lock and gives no pattern, key type or barrel

   Amazon reference

   B017M057ZI (same reference on 5 Amazon marketplaces)

   EAN

   8719172410372

   • Publishes internal dimensions on all three axes, alone on this shelf
   • Four adjustable rails, which is the only rail count printed in this hub
   • No load rating, on the cabinet that publishes everything else

   Best for: A nine-unit wall installation where the equipment has already been measured and the buyer wants to check it against a published internal figure before ordering.

   ≈ 218 €

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