Standard Medicine Cabinet Size: A Spec Guide to LED Cabinets

You are specifying a mirror cabinet for a vanity wall, and the first question is always the same: what is the standard medicine cabinet size? The honest answer is that no single figure covers every project, because a cabinet is a box with a door, a body and a light, not just a sheet of glass. This guide shows how to read the numbers in our catalog, how to check them against your wall, and how to write a spec line a factory can quote without guessing.

All ten SANIKB LED mirror cabinets covered here print the same final figure, 135 mm, in their catalog size strings. The first two figures change from model to model, so the footprint you pick decides how the cabinet sits over the basin. We will walk through each size, show how to compare layouts, and flag the points you should confirm in writing before you place an order.

The guide is written for distributors, contractors, hotel and multifamily developers, and specifiers. It assumes you buy in quantity and need to defend each line of the specification to an installer, an architect or a building inspector. Where a fact is not in our catalog, we say so and tell you how to get written confirmation.

Is there a standard medicine cabinet size?

Not in the way most buyers hope. Walk through a few supplier catalogs and you will find a spread of widths and heights, and the spread is wide on purpose. Vanities come in different lengths, rooms have different ceiling heights, and designers want the mirror to relate to the basin below. One fixed size would force every room to adapt to a single box.

What you can do is build a short list of sizes that suits your project mix, then standardize on those. A hotel group might lock in two cabinet sizes for all guest rooms. A multifamily developer might choose one size for the main bath and a smaller one for the powder room. That is a project standard, and it is the practical way to control cost and spares.

Our LED mirror cabinet range gives you ten models to choose from. Their catalog sizes run from 500 × 700 × 135 mm to 1000 × 700 × 135 mm in the first figure, with one model printed the other way around. Treat those as the menu. Your job is to match one of them to the wall, the vanity and the user.

Treat medicine cabinet sizes the way you treat tile or doors: pick from the supplier's range, then lock the choice into your project documents. Once the size is fixed, every later decision about layout, light and controls becomes easier to compare.

Decision table: all ten cabinet sizes side by side

This table collects every size string exactly as printed in the catalog. The catalog does not label the three figures as width, height or depth, so we do not label them here either. Use the table to shortlist, then confirm the axis order on the model spec sheet.

The ten models range from 500 × 700 × 135 mm (KS-4010 and KS-4008) to 1000 × 700 × 135 mm (KS-4007), with 800 × 700 × 135 mm the most common size string. Four models share that 800 × 700 × 135 mm string, which makes it the easy choice if you want to keep spares simple across several rooms.

Two details are worth noticing. KS-4004 prints 700 × 800 × 135 mm, which is the 800 × 700 figures in a different order. That is a reason to check the orientation before you assume it matches the 800 mm models. Also, the layout column says LED configuration for several models. That is the catalog wording, and it tells you nothing about where the light sits. Ask the factory.

The Single Panel LED Mirror Cabinet (KS-4001) is a good reference model because it is the simplest layout: a straight-edged mirrored front over a wall cabinet. If you compare other models against it, the differences in light placement and door arrangement are easy to see.

How to read medicine cabinet dimensions in the catalog

Medicine cabinet dimensions in a catalog describe the outside of the finished cabinet. They do not tell you the usable shelf space, the opening in a wall or the clearance a door needs. Keep those four things apart in your notes: the outside size, the interior size, the wall opening and the swing space.

Every size string in our catalog uses millimeters and carries three figures separated by the multiplication sign. The final figure is 135 mm on all ten models. Because the catalog prints no axis labels, the safe move is to confirm against the model spec sheet which figure is which. Do that once per model, and record the answer in your project file.

Convert to inches only after you have the confirmed figures, and round in the direction that protects your clearances. A cabinet that is a few millimeters larger than the space you allowed can force a rework. A cabinet that is a few millimeters smaller just needs a trim detail.

How to measure a medicine cabinet location, step by step

Before you pick a model, measure the wall and the vanity. Take the measurements on site, not from a plan, because built walls drift from drawn ones. Use a tape, a level and a pencil. Write every number with its location, and photograph the wall with the tape in view.

Step 1: measure the wall space

Measure the clear wall width between side walls, door casings or other fixtures. Then measure from the top of the backsplash or vanity to the ceiling or the nearest obstruction. Check whether the wall is flat. A bowed wall changes how a surface-mounted body sits and can open a gap along one edge.

Note anything on the wall: switches, outlets, a vent, a window return or a towel bar. Each one can block a cabinet, or fix where the power feed must come in.

Step 2: measure the vanity and the fixtures

Measure the vanity top width, the basin position and the faucet. A cabinet that is wider than the basin area can look heavy. One that is much narrower can look lost. Many designers like the cabinet to sit within the vanity width, so check that line first.

Mark the faucet spout height and reach as well. A tall faucet can touch a cabinet that hangs low, and a swing-out door can strike a spout that clears the closed cabinet. Check the actual motion, not just the closed position.

Step 3: check the swing and the user

Decide which way each door opens and what stands next to it. A door that opens toward a side wall can be blocked at the angle you need to reach the shelves. Split doors help here, because each leaf is narrower and swings through a smaller arc.

Then stand where the user will stand. Check the eye line and the reach to the top shelf. This is the quickest way to learn whether a tall model or a wide model is the better fit. Repeat these steps for each room type, because how to measure a medicine cabinet zone in a guest bath is not always the same as in a powder room.

Medicine cabinet depth: what the 135 mm figure means

Medicine cabinet depth matters because it sets how far the body sticks out from the wall, or how much space it needs inside one. All ten of our LED mirror cabinets print 135 mm as the final figure in their catalog size string. That consistency helps you plan a room with mixed models, since any projection or cavity allowance will be similar across them.

There is one caution. The catalog does not label the figure as depth, so confirm that against the model spec sheet before you frame a wall or order a filler panel. If your detail depends on a depth number, ask the factory to confirm it in writing for the exact model.

Also ask what the figure includes. Does it cover the door hinges, the light module and any rear electronics? Does it include a mounting bracket or a rear plate? Those parts can add to the overall projection, and they can matter for clearance beside a basin or a shower glass screen.

A slim body suits a narrow room, but it also limits the shelf space. That is a trade-off, not a flaw. Match it to what the user will store.

Recessed or surface mounted: confirm before you frame the wall

A recessed cabinet sits inside the wall cavity, with the front near flush to the wall finish. A surface-mounted cabinet hangs on the wall face. Both types exist in the market, and each suits different rooms. Recessed cabinets save projection but need a framed opening. Surface-mounted cabinets need no opening but stand out into the room.

Our catalog does not document the installation type model by model. So do not assume that a slim cabinet can be recessed, and do not assume it cannot. The installation method is confirmed per model, in writing, before you order. That written answer should tell you the mounting hardware, the wall type it suits and any trim that finishes the edge.

If recessed mounting is supported on a model you want, ask for the opening requirements and the cavity needs. Give those numbers to the framing trade early. Never reuse the outside size of the cabinet as the rough opening, because the opening needs its own tolerances.

If surface mounting is the method, check how the cabinet meets the wall at the sides and the top. A gap behind a light cabinet can show a glow along the wall. Ask whether a rear spacer or a trim is available, and whether it is part of the quote.

Interior storage: plan the shelves before you pick a size

The catalog shows shelf storage behind the mirrored front on most of these models, including KS-4009, KS-4010, KS-4008, KS-4006, KS-4005, KS-4004, KS-4003, KS-4002 and KS-4001. It does not give shelf counts, shelf spacing or usable interior sizes. Ask for those before you decide that a cabinet is big enough.

Start with a list of what the cabinet must hold. Think about the tallest bottle, the widest box and the items used every day. A wide, shallow cabinet suits flat items. A tall one suits bottles. A hotel may only need a few small items, while a family bath may need much more.

Check the hinges, the light module and any power parts, since these can take space from the shelves. Do not count that space as usable unless the factory confirms it. A written interior size for the exact model is the only number you can safely design around.

Which size fits which vanity width?

The simplest rule is to line up the cabinet with the basin, not the whole vanity. That said, the cabinet width you pick should look planned. Here is how the ten models group by the first figure in the catalog string.

The 500 × 700 × 135 mm group has two models: Perimeter LED Mirror Cabinet (KS-4010) and Tall Split Door LED Mirror Cabinet (KS-4008). These suit narrow vanities, powder rooms and spaces beside a window or a door. They also work in pairs above a long double vanity, one over each basin, if you want separate storage for two users.

The 700 mm group has Square Front LED Mirror Cabinet (KS-4009) at 700 × 700 × 135 mm and Tall Split Front LED Mirror Cabinet (KS-4004) at 700 × 800 × 135 mm. The square front of KS-4009 fits a compact basin where you want a balanced look. KS-4004 needs its orientation confirmed, as noted above.

The 800 mm group is the widest choice with four models: KS-4006, KS-4003, KS-4002 and KS-4001. All print 800 × 700 × 135 mm. This is the group to look at for a standard single-basin vanity in a main bath, and the one that gives the most layout variety at one size.

Above that sit two larger models. Side Bar LED Mirror Cabinet (KS-4005) prints 900 × 700 × 135 mm, and Wide Split Door LED Mirror Cabinet (KS-4007) prints 1000 × 700 × 135 mm. These suit longer vanities and rooms where the mirror is a main feature. Check the wall and the neighbors on each side, because large cabinets leave little margin.

Layout choices: panels, split doors, light bars and borders

Size is only half the choice. The face of the cabinet changes how it looks and how it opens. Here is what the catalog says about each layout, and no more than that.

A single front panel, as on KS-4001, gives a clean mirror surface with one door. A split front, as on Split Front LED Mirror Cabinet (KS-4002), divides the face into two vertical mirrored sections. Split doors, as on KS-4007 and Tall Split Door LED Mirror Cabinet (KS-4008), meet at a central seam. Each leaf is narrower, so the doors need less swing room than one wide door.

The side bar models, KS-4005 and Side Bar LED Mirror Cabinet with Lower Display (KS-4006), place two vertical light bars near the sides of the mirrored front. KS-4006 also includes a small display near the lower center. KS-4010 uses an inset perimeter band, which is a luminous rectangular border around the mirrored front. KS-4003 has a rounded rectangle front with a softly rounded edge.

Pick the layout by the room. A perimeter band reads as a frame and suits a modern bath. Side bars give light from both sides of the face. Split doors suit a tight wall. Whatever you choose, ask which light zones each model has and how they are controlled, because the layout name alone does not say.

Lighting and control options to write into the spec

Every cabinet in this guide lists 6500 K and 3000 K color temperatures in the catalog. That gives you a cooler white and a warmer white. Ask the factory how the two are selected on your model and whether the setting is remembered after power is cut.

The control options differ by model. KS-4009, KS-4010, KS-4008 and KS-4006 list Touch, Infrared Sensor and Bluetooth. KS-4005, KS-4004, KS-4003, KS-4002 and KS-4001 list a longer set: Single Touch, Double Touch, Triple Touch, Infrared Sensor, Bluetooth, Radar Sensor and Aromatherapy Spray.

Do not treat these as extras that come free with every unit. Write the exact option you want on the order line, for every model, in every room type. If the model lists several options, name the one you are buying. A quote that says only LED mirror cabinet leaves the choice to the factory.

All ten models list aluminum alloy as the material. Ask what parts that covers: the body, the frame or the trim. Also ask about the finish, since the catalog gives no finish details. A hotel or multifamily project will want the same finish across every unit.

The LED mirror cabinet range is ETL certified, and every model in this guide lists 6500 K and 3000 K color temperatures. For electrical details, request the rating information and connection arrangement for the exact model in writing from the factory.

Accessible mounting height and reach

If the project must meet accessibility rules, size is not the only issue. Mounting height matters as much. Under ADA Standards section 603 (toilet and bathing rooms), the bottom edge of the reflecting surface must be no higher than 40 inches above the floor when the mirror is over a lavatory or countertop, and 35 inches otherwise.

That limit applies to the reflecting surface, so check where the glass starts on the cabinet you choose, not where the cabinet body starts. A tall cabinet hung high to clear a faucet might fail the rule. A shorter model, or a lower mounting point, might pass.

Storage has its own rule. ADA Standards section 811 (storage) says accessible storage elements must be within accessible reach ranges, which are set out in section 308. If a cabinet is meant to serve as accessible storage, the shelves and the door pull must be reachable from the user's position.

We are a factory, not a code consultant. Ask your architect to confirm the heights and clearances for your jurisdiction. Then give us the mounting height you need, and we will confirm whether the model you picked can meet it.

How to choose by project type

Different projects put different pressure on the same cabinet. Here is how we suggest you think about three common buyer groups.

Hotels and hospitality

Guest rooms reward consistency. Pick one or two sizes, one layout family and one control set, and repeat them across every room. The 800 mm group gives four layouts at the same size string, which lets you vary the look between room types without changing the wall detail. Ask the factory how it will keep finish and color temperature consistent across a large order.

Multifamily and residential developers

Here the budget and the install time matter most. A single-panel model like KS-4001 keeps the face simple. A compact model like KS-4010 or KS-4008 suits a secondary bath. Standardize on as few sizes as you can, because every extra size means another spare to stock and another detail for the trades.

Distributors and trade resellers

A distributor wants a range that covers the common vanity widths without a long tail of slow sellers. The ten models cover five first-figure groups, from 500 to 1000. Look at the 800 mm group for the core, then add one narrow and one wide model. We confirm minimum order quantity, samples and lead time per model in the written quotation.

For a wider view of what else sits on the same wall, see our LED bathroom mirrors and the full LED mirror catalog.

Common mistakes when specifying a mirror cabinet

Most problems on site come from a handful of repeat errors. Check your spec against this list before you issue it.

The first mistake is chasing a standard medicine cabinet size from a general web chart and ordering to it. Cabinet makers do not share one size set. Use the sizes in the catalog of the supplier you are buying from, and confirm them in the quote.

The second is treating the outside size as the opening size. A recessed cabinet needs its own opening figures, and the catalog does not give them. The third is skipping the door swing check. A cabinet that clears in a plan view can still hit a faucet, a wall or a neighboring light.

The fourth is assuming the layout name tells you where the light is. LED configuration is a catalog label. It is not a description of the lighting zones. The fifth is leaving options off the order line. If you want Radar Sensor or Aromatherapy Spray, say so, and confirm the model lists it.

The sixth is ordering before you confirm the mounting method. If the method is wrong for the wall, you may need a different model or a different wall detail. That is a costly surprise on a large hotel floor, where the same error repeats in every room.

The seventh is mixing up similar models. KS-4008 and KS-4010 print the same size string, yet one has an inset perimeter band and the other does not. Always put the model code on the order line, not just the size.

Documents to request before you order

A good quote is more than a price. Before you sign, ask the factory for these items in writing, for the exact model and configuration you are buying.

First, the model spec sheet with the confirmed meaning of each figure in the size string. Second, the installation instructions, including the mounting method and whether recessed installation is supported. Third, the electrical information: the rating, the supply requirement and the connection arrangement.

Fourth, the list of control options for the model, with the exact one you are ordering. Fifth, a finish and color description for the aluminum alloy parts. Sixth, the written confirmation of minimum order quantity, sample availability and lead time. These are confirmed per model in the written quotation.

Where a fact is not in the catalog, ask the factory to confirm it in writing. If the answer matters to your wall, your electrician or your inspector, do not rely on a verbal reply. We reply to inquiries within 12 business hours.

Ready to specify? Send us your sizes

Send us the model, the size and the quantity for each room type, along with the control options you want and the mounting method you expect. We will reply within 12 business hours with a written quotation, including minimum order quantity, samples and lead time per model. Start with our lighted medicine cabinets to shortlist, then request a quote on the models that fit your walls.

Frequently asked questions

What is the standard medicine cabinet size?

The standard medicine cabinet size varies by supplier, because no single figure fits every vanity. SANIKB lists ten LED mirror cabinets with catalog sizes from 500 × 700 × 135 mm to 1000 × 700 × 135 mm. Pick the size that matches your vanity and wall, then confirm it in writing.

Can I recess these LED mirror cabinets into the wall?

The installation method is confirmed per model, because the catalog does not document the installation type for each cabinet. Do not assume a slim body can be recessed. Request written confirmation from the factory, along with the opening requirements, before the framing trade starts work on your wall.

Which LED mirror cabinet size suits a single-basin vanity?

The 800 × 700 × 135 mm models suit a single-basin vanity best, and four layouts share that size string: KS-4001, KS-4002, KS-4003 and KS-4006. Compare layouts, control options and door arrangement, then confirm the wall clearance and the faucet swing for your chosen model.

Are SANIKB LED mirror cabinets certified?

The SANIKB LED mirror cabinet range is ETL certified at the range level. For your project, ask the factory to confirm the electrical rating and the connection arrangement for the exact model in writing. Include the certification requirement in your quote request so the paperwork matches your order.

— Rokan, SANIKB