How to Measure Up for Glass Display Cabinets: A Simple Sizing Guide

Start with what will go inside. Measure the tallest, widest and deepest items you plan to display, then add a few centimetres of breathing room to find the shelf height and internal depth you need. Only then measure the space: the wall width at three heights, the height to the lowest obstruction, the available depth, door swing and the delivery route. For glass cabinets, also check the floor is level, note where daylight falls and locate the nearest socket if the cabinet is lit.

Working this way round avoids a common disappointment: a cabinet that fits the alcove beautifully but cannot hold the decanter or vase you bought it for. When you know both sets of measurements, choosing from our modern glass display cabinets UK sale range becomes much more straightforward.

Measure your collection first

Gather everything you intend to display and lay it out on a table. Measure the tallest item and note its height. Do the same for the widest and the deepest. Add at least 3cm to 5cm to the tallest height, so you can lift items in and out without tilting them against the shelf above.

Next, think in rows. Arrange your items roughly as they would sit on a shelf, leaving gaps between them, and measure the length of each row. This tells you how much shelf width you need and roughly how many shelves. A collection of small glass pieces may fill four shelves in a narrow cabinet, while a handful of large vases might need only two shelves in a wider one.

Finally, check depth. Plates displayed upright, bowls and some sculptures are deeper than you expect. If your deepest item is 30cm, look for a cabinet with an internal depth comfortably above that. Remember that internal depth is less than the external measurement, as the frame and doors take up space.

Measure the width of the space

With the collection measured, turn to the wall. Measure the width at three heights: near the floor above the skirting, at around waist height, and close to the top of where the cabinet will sit. Use the smallest figure.

Alcoves either side of a chimney breast are a favourite spot for glass cabinets in period homes, but they are rarely the same width as each other, and their walls are rarely straight. Measure both alcoves separately if you plan a matching pair, and size the cabinets to the narrower one so they look identical once in place. Leave 2cm to 3cm on each side for fitting.

On an open wall in a newer home, decide where the cabinet will sit relative to windows, doors and other furniture, and measure the space between those fixed points. A cabinet looks more settled with clear wall either side rather than pressed against a door frame.

Measure the height

Measure from the floor to the lowest obstruction above: ceiling, coving, a picture rail, a window head or a shelf. Leave at least 5cm clear above the cabinet. If the cabinet has top mounted lighting or a transformer, check the specification for any extra clearance needed.

Consider sightlines too. Glass cabinets are about seeing, so think about what sits at eye level. For most adults, that is roughly 150cm to 165cm from the floor. A cabinet whose middle shelves land around that height shows the collection at its best. Very tall cabinets push the top shelf above eye level, where items are only seen from below.

Measure the depth you can spare

Measure from the wall outwards to the nearest walkway or piece of furniture, and keep around 80cm to 90cm clear in front of the cabinet. Add the thickness of the skirting board, typically 1.5cm to 2.5cm, to the cabinet’s stated depth, because a freestanding piece will stand forward of the wall by that amount.

Glass cabinets are often slightly shallower than solid ones, commonly 33cm to 40cm, which helps in rooms where space is tight. Browsing our modern living room furniture UK range alongside cabinets shows how display pieces sit with sofas, tables and media units, which can help you picture the finished layout.

Check the floor is level

This step matters more for glass than for any other furniture. A cabinet standing on an uneven floor leans slightly, and glass doors then hang out of line. Over time that can cause doors to rub, catches to stop working and hinges to work loose.

Place a spirit level on the floor in the cabinet position, front to back and side to side. Older homes often have floors that slope towards the centre of the room or towards an outside wall. If the floor is out by more than a few millimetres, look for a cabinet with adjustable feet, or plan to use furniture shims. Check whether there is a gripper strip or thick underlay beneath carpet, as these can also cause rocking.

Allow for door swing and safety

Most glass cabinets have hinged doors. Measure the width of each door and make sure nothing sits within that arc: a sofa arm, a side table, a radiator or the swing of a room door. It is particularly important that a room door cannot swing into a glass cabinet door.

If space in front is tight, consider a sliding door design or a narrower single door cabinet. Check which side a single door is hinged on and whether it can be reversed, so it opens away from the nearest wall.

Think about light and glare

Glass reflects. A cabinet placed directly opposite a large window can catch so much reflection that its contents are hard to see during the day. If you can, position the cabinet on a wall at right angles to the main window, where light falls across the glass rather than straight onto it.

Strong direct sun can also fade some items over time. If your collection includes textiles, prints or delicate finishes, choose a spot that avoids long periods of direct sunlight. A sheer curtain or blind on a sunny window softens the light without darkening the room.

Artificial light matters as well. A ceiling pendant directly in front of the cabinet can create a bright reflection on the glass in the evening. Lamps placed to the side, or lighting inside the cabinet itself, show the collection without that glare. Stand where you will usually view the cabinet from, perhaps the sofa or the doorway, and look at the wall at different times of day before you commit to a spot.

Locate sockets and switches

Many glass display cabinets include LED lighting. Note where the nearest socket is and how far the cable will need to run. A cabinet in an alcove may hide a socket behind it, which is convenient if you can still reach the plug; less so if it blocks a socket you use for other things. Check whether the lighting has a switch on the cable, the cabinet or a remote control, and make sure it will be accessible once the cabinet is in place.

Measure the route into the room

Measure every doorway, hallway and stair turn the cabinet must pass through. Include the front door and any internal doors, measuring the clear gap with the door fully open. In flats, measure the lift and any communal corridors.

Glass cabinets often arrive with the glass panels packed separately, but the main carton can still be long. Compare the package dimensions with your narrowest point, and plan where you will assemble the cabinet, ideally in the room where it will stand.

Plan the whole wall

A glass cabinet rarely stands alone. If it will share a wall with other pieces, measure those too and consider how they line up. A cabinet beside one of our glass sideboards UK sale styles creates a coordinated wall, especially if the sideboard top lines up with a shelf inside the cabinet. In a hallway or narrow living room, a slim cabinet paired with modern glass console tables UK keeps the look light.

For reference sizes and typical shelf spacing, our guide to standard display cabinet dimensions in the UK covers common heights and depths.

Common measuring mistakes to avoid

Most sizing problems come from a handful of small oversights. Measuring only once, at floor level, misses walls that lean or narrow towards the ceiling. Forgetting the skirting board makes a cabinet stand further forward than expected. Measuring to the ceiling rather than to the coving or picture rail leaves a tall cabinet a few centimetres too high to sit flush against the wall.

Another frequent mistake is ignoring the room door. A cabinet placed just inside a doorway may fit neatly on paper but leave the door unable to open fully, or put glass directly in the path of a swinging door. Check the door arc as carefully as the cabinet doors themselves. Finally, write every figure down as you take it. Measurements remembered later are rarely quite right.

Mark it out

Use masking tape to mark the cabinet footprint on the floor and two vertical lines on the wall up to its full height. Live with the outline for a day. Open nearby doors, sit in your usual seat and look at the space at different times of day. Adjust the size if anything feels tight.

When you are happy with the numbers, you can explore glass cabinets and matching pieces across the full range at Furniture in Fashion, with free delivery to most UK mainland postcodes. Returns are available up to 30 days.

FAQ

Why should I measure my items before the wall?

Because the items set the minimum shelf height and internal depth. A cabinet that fits the wall but cannot hold your tallest piece will not do its job.

Do glass cabinets need a level floor?

Yes. Even a slight lean can misalign glass doors over time. Use adjustable feet or shims if the floor is uneven.

Where is the best place for a glass display cabinet?

On a wall at right angles to the main window, away from radiators and strong direct sun, with clear space for doors to open.

How much space should I leave above a glass cabinet?

At least 5cm below the lowest obstruction, more if the cabinet has top mounted lighting.