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Home Office · Sizing

Filing & Office Storage Sizes Explained

By the Nest & Yard editorial teamUpdated 2026-08-094 min read

Our pick: the SONGMICS Mobile File Cabinet, Lockable, with 4 Drawers, Hold Documents, Stationery, Pre-Assembled, for Office, Home Office, 39 x 45 x 69.3 cm, Cloud White — the best Filing & Office Storage we tested, from £89.99.

Organising your paperwork can quickly become a chaotic task if you don’t have the right storage solution. This guide breaks down the different filing and office storage sizes available on Amazon UK, explaining exactly what those measurements mean and how they relate to your space – whether you're tackling a small home office or a larger workspace. Before you invest in a file cabinet, understanding sizing is key; we’ll look at options like mobile cabinets with varying drawer counts, such as the SONGMICS or VASAGLE ranges, to help you find the perfect fit.

See the full range in Filing & Office Storage.

Pros

  • Four lockable drawers give plenty of room for files and stationery
  • Arrives pre-assembled, so it is ready to use straight away
  • Smooth-rolling casters make it easy to reposition under a desk

Cons

  • Taller 69.3cm profile needs more vertical clearance than 3-drawer units
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Pros

  • Doubles as a printer stand thanks to the open top shelf
  • Fits both A4 and letter-size hanging files
  • Steel frame adds stability under load

Cons

  • Drawers do not include a lock
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Pros

  • All 3 drawers lock together for document security
  • Adjustable hanging rails fit various folder sizes
  • Extra drawer over 2-drawer models for growing archives

Cons

  • Taller unit needs more floor clearance
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Pros

  • 5 castor wheels make it easy to roll between rooms
  • Rustic wood-look finish suits most home decor
  • Bottom drawer takes A4 hanging files

Cons

  • Wheels need locking on uneven flooring
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FAQ

What do you mean by ‘A4’ filing? Is that the same as standard paper size?

‘A4’ refers to a specific sheet of paper size – 210mm x 297mm. Filing cabinets are often described in A4 dimensions, indicating the internal depth and width suitable for holding A4 documents.

I have a small home office; what filing cabinet size would be best?

For a smaller space, a ‘narrow’ or ‘slimline’ filing cabinet (typically around 400mm wide) is ideal. These units offer good storage without taking up too much floor space and are readily available in various depths.

What’s the difference between ‘deep’ and ‘standard’ filing cabinets?

'Standard' filing cabinets generally have a depth of around 600mm, allowing for larger document stacks. 'Deep' cabinets extend to 800mm or more, providing extra space but requiring a wider room.

How are filing cabinet depths measured? Is it always from front to back?

Cabinet depths are measured from the front edge of the unit to the back edge, creating the internal space for storing files. Check the product specifications carefully to confirm this measurement.

I need to store legal documents; do I need a particularly deep filing cabinet?

While ‘deep’ cabinets offer more space, standard A4 depth (600mm) is usually sufficient for legal documents. Consider whether you'll be storing large binders or thick files in addition to paper.

What does 'extra-wide' mean when describing a filing cabinet?

'Extra-wide' filing cabinets, often 900mm or more, are designed to accommodate a greater number of drawers and are suitable for offices with high document volumes.

How do I measure my space before buying a filing cabinet?

Measure the width and depth of the area where you intend to place the filing cabinet, taking into account any furniture or obstructions. Allow at least 50mm clearance on all sides for easy access.

What’s a ‘pedestal’ filing unit? Is that different from a standard cabinet?

A pedestal filing unit consists of a central column with drawers attached, offering a more compact storage solution compared to a full-width cabinet – often ideal for limited spaces.

Can I fit multiple filing cabinets together?

Yes, you can combine units, but ensure they are compatible in terms of depth and width. Consider using corner filing units or connecting them with appropriate accessories if available.

What should I consider regarding drawer spacing when choosing a filing cabinet?

Pay attention to the gap between drawers – too little space can make it difficult to slide files in and out smoothly, while excessive space might reduce storage efficiency. Look for units with consistent drawer spacing.

In depth

Filing cabinets aren’t simply boxes on wheels; they come in a bewildering array of sizes, each designed for a particular level of storage needs. Understanding the terminology used to describe these sizes is crucial before you start browsing, as manufacturers often use abbreviations and technical terms that can be confusing without context. The most common sizing system relies heavily on ‘drawers per foot’ – this dictates how many individual drawers fit within one linear foot (12 inches) of the cabinet's length. It’s the single biggest factor in determining whether a filing cabinet will comfortably accommodate your paperwork.

A '48/4 drawer' filing cabinet, for example, signifies that four drawers are designed to fit into every 12 inches of its length. This is generally considered ideal for small offices or home offices dealing with moderate document volumes. If you primarily handle invoices, statements and smaller reports, a 48/4 or similar configuration would likely be sufficient. However, if you’re managing substantial archives – perhaps legal documents, detailed project files, or significant quantities of receipts – then the drawer count becomes significantly more important. Moving beyond this basic measurement, ‘60/6’ cabinets offer twice the storage capacity per foot and are well-suited to larger businesses or individuals with extensive record-keeping requirements. Similarly, a ‘72/8’ filing cabinet would be appropriate for those needing considerably more space, but remember that increased drawer density also increases the overall footprint of the cabinet itself.

Beyond this fundamental drawer-per-foot metric, you'll encounter variations like 'A4' and 'Letterbox' which relate to the *size* of the individual drawers themselves, rather than the overall cabinet capacity. ‘A4’ filing cabinets are designed specifically for storing A4 paper, the standard size used in most offices across the UK. These are almost universally available. ‘Letterbox’ filing cabinets, on the other hand, are built to accommodate Letter-sized (A4) documents but include a slightly deeper drawer profile – this is often favoured when dealing with thicker paperwork or materials that need to be stored vertically rather than laid flat. It's absolutely vital to consider what *type* of documents you’ll primarily store when evaluating these terms; choosing the wrong size can lead to awkwardly crammed files and wasted space.

Before embarking on your purchase, a thorough measurement of your available storage space is essential. Don’t just estimate based on the dimensions listed in the product description; account for obstructions such as radiators, electrical outlets or furniture. Measure the width, depth, and height of the area where you intend to place the filing cabinet. Then, factor in enough clearance around the cabinet – at least 15cm is recommended – for easy access and manoeuvrability. Consider too how easily you’ll need to move it; a larger, heavier cabinet will require more floor space and possibly assistance with movement. Finally, think about whether you'll need to stack filing cabinets – if so, ensure that the base unit has sufficient clearance beneath it to accommodate any stacking units.

A common mistake amongst UK shoppers is focusing solely on the ‘drawers per foot’ specification without adequately assessing the overall size of the cabinet and its impact on their space. Many people are surprised by how large a 72/8 filing cabinet can be, particularly when considering that it occupies a significant amount of floor area. It's far more helpful to think about your *volume* requirements – how many files do you need to store? – rather than getting fixated on the number of drawers. Over-purchasing is a frequent problem; investing in a slightly smaller cabinet and adding additional storage units if needed offers greater flexibility and avoids unnecessary clutter.

Finally, remember that filing cabinets are often made from metal (steel or powder-coated steel) and can be quite heavy, even when empty. Ensure your floor covering – particularly laminate or carpet – is suitable for supporting the weight of a filled cabinet. Consider using protective pads underneath the feet to prevent scratching your flooring. Selecting the correct size isn't just about accommodating your paper; it’s about ensuring the filing cabinet integrates seamlessly and safely into your home or office environment, allowing you to organise and access your documents efficiently for years to come.

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.

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