Vanity Mirror Size Guide for LED Bathroom Mirror Projects

A vanity mirror size guide has to answer one plain question: how much glass does this wall, this basin and this user need? Photos and room renders hide the answer, because every mirror looks right in a styled image. This guide gives you a repeatable method for sizing LED mirrors across a hotel, multifamily or distribution project, and it ties each step to the sizes in the SANIKB catalog.

You will see the same pattern throughout: measure the vanity first, decide the orientation, pick the lighting layout, and only then choose a catalog model. Working in that order keeps your schedule short and your quote requests precise.

SANIKB is a factory-direct supplier, so you can ask the factory to confirm any size you plan to schedule. SANIKB’s LED mirror range is ETL certified. That is a range-level statement, and it sits alongside the sizing work below rather than replacing it.

How big should a bathroom mirror be? Start with the vanity

The short answer to how big should a bathroom mirror be is this: size it to the vanity first, then adjust for the room. The vanity gives you a fixed reference. The ceiling, side walls and neighboring fixtures then tell you how much of that reference you can actually use.

Any bathroom mirror size guide worth using begins with an elevation of the wall. Draw the vanity top, the basin, the faucet, the splashback and the ceiling line on one sheet. Mark the basin centerline. Then place a rough mirror outline on top and see what is left around it.

Three questions come out of that exercise. Does the mirror feel balanced against the vanity? Does it leave room for the faucet and any wall lights? Can the tallest and shortest users both see their faces? If the answer to any of these is no, change the size before you look at models.

This order matters for distributors too. Your customers rarely buy a mirror in isolation. They buy it for a vanity that already exists, so a size guide that starts from the vanity maps directly onto how they shop.

Think about who stands at this mirror every day. In a hotel, guests of very different heights share one vanity. In an apartment, a couple may use the mirror at the same time. A mirror that works for the widest range of users is almost always a mirror that errs slightly toward more glass, not less, as long as the wall and the fixtures allow it.

It also helps to separate what you can change from what you cannot. The vanity, the basin and the ceiling are usually fixed. The mirror size, the orientation and the lighting layout are the variables you control. Write the fixed items down first, and the variable items become a short list of sensible options instead of an open question.

Decision table: seven LED mirror series at a glance

The table below collects the seven series covered in this guide. Sizes are copied exactly as printed in the catalog, in mm. The catalog prints no axis labels, so read each pair as a catalog size string and confirm it against the model spec sheet before you schedule it.

Each series lists more sizes than the table shows. The BBR series lists 20 sizes, and each of the other six lists 15. Ask for the full list when you build a schedule.

How big should mirror be over vanity: three reference lines

When buyers ask how big should mirror be over vanity, they usually mean three separate things: how wide, how tall and how high above the top. Treat these as three reference lines on your elevation, and you can solve them one at a time.

The width line

Start with the vanity top. A mirror that runs wider than the vanity looks top-heavy and often collides with side walls or door returns. A mirror far narrower than the vanity looks lost. Most projects settle on a mirror that is a little narrower than the vanity top, centered on the basin.

For a single basin, center the mirror on the basin centerline. For a long vanity with two basins, you have two choices that we cover below: one wide mirror or two matching mirrors. Both work, but they lead to very different catalog choices.

A shared mirror also changes how you think about the lighting layout. A single wide unit lights the whole counter evenly, while two units give each user a separate light source. Neither is better in every case, so let the vanity and the brief decide.

The height line

The height line is about useful reflection. Stand at the basin and think about where faces will be. A tall user and a short user need different glass, so the mirror should cover the range between them with some margin. Portrait formats suit narrow vanities, because they add reflective height where width is limited.

Do not fix the height without checking the ceiling. A tall mirror under a low ceiling leaves a thin strip of wall above it, and that strip draws the eye. Leave a visible margin so the mirror looks placed, not squeezed.

The faucet and splashback line

The bottom edge of the mirror must clear the faucet, the splashback and any shelf behind the basin. A tall faucet can sit in front of the lower part of the glass, so the visible reflection starts higher than you expect. Mark the faucet top on your elevation and keep it clear of the mirror edge, or accept that some reflection is lost.

Also check the clearance between the mirror and the lights beside it. Wall sconces, switch plates and outlets all fight for the same wall space. Settling this on paper is far cheaper than moving a junction box later.

Portrait or landscape: orientation changes the size you need

The same mirror outline can serve a portrait or a landscape layout, and that choice changes everything about how it sits on the wall. The BBR series catalog shows its outline in both portrait and landscape bathroom installations. The KS001 series is shown in both layouts too, and the KS005 series catalog shows the same simple outline in portrait and landscape proportions.

Portrait works when the vanity is narrow or when you want a vertical line to lift a low room. Landscape works when you want one clean reflection across a longer vanity. Choose the orientation before you choose the size, because a size that suits one orientation can look awkward in the other.

Orientation also affects service access and wiring position. The catalog does not tell you where connections sit, so request written confirmation from the factory on the mounting method and any orientation limits for the exact model. Never assume that every size can hang either way.

The KS001 model codes end in H or V. Confirm against the model spec sheet what each suffix means for the installation before you copy the codes into your schedule.

Single basin, double basin and shared mirrors

The number of basins sets the starting point for width. A single basin pairs naturally with a mid-size mirror centered on the basin. A double basin gives you a decision about whether to use one long mirror or two smaller ones.

One long mirror gives a continuous reflection and a calm wall. It suits wide formats like the larger sizes in the KS007 and KS005 series. The downside is that the mirror must be centered on the vanity, not on each basin, so reflections do not align with each user.

Two matching mirrors align with each basin and let each user have their own light. They also reduce the risk of damage during delivery, because each unit is smaller. The cost is a visible gap between the two, and you must plan the centerline spacing carefully.

For hotel and multifamily projects, repeatability matters more than variety. Pick one arrangement per vanity type and hold to it across the building. Your installers learn the pattern, and your spare parts stay simple.

Reading catalog sizes the right way

Catalog sizes are printed as pairs, for example KS-BBR2436: 605 × 905 mm. The pair gives two dimensions in mm, but the catalog prints no axis labels. So do not call the first figure width or the second figure height in your documents unless the supplier confirms it.

The model code carries a clue, but not a promise. The digits in a code such as KS007-5535 or KS-RGBB2836 appear to relate to the size, yet you should not decode them yourself. Use the catalog string as the single source and ask the factory to confirm the figures and the orientation for the exact model.

Here is a short habit that saves arguments later. Copy the size string exactly, keep the mm unit, attach it to its own model code and add a note that the figure is the catalog size. If the factory confirms an axis label in writing, update the note and keep the confirmation with your order file.

Different series can share a size but not a look. For example, the KS008 series and the RGBB series both list a size of 1200 × 800 mm among their models, and the KS007, KS005 and KS006 series list it as well. A shared size gives you a way to compare layouts at the same footprint, which is a practical shortcut when a client cannot decide on a style.

Note that the same figures do not guarantee identical installation details. Each series has its own construction, so a swap across series needs a fresh check of the mounting and the power entry.

Compact formats: the smaller sizes in the catalog

Small vanities need small mirrors, and the catalog covers that need. The Black Frame Rounded Rectangle LED Mirror lists KS-BBR2030 at 505 × 765 mm and KS-BBR2230 at 565 × 765 mm. Its dark frame and gently rounded corners give a softer look than a sharp rectangle.

The KS008 series lists KS008-2028 at 500 × 700 mm and KS008-2432 at 600 × 800 mm. The RGBB series lists KS-RGBB2028 at 500 × 700 mm and KS-RGBB2432 at 600 × 800 mm. The KS001 series lists KS001-2028V at 503 × 703 mm and KS001-2432V at 603 × 803 mm.

These compact sizes suit powder rooms, secondary bathrooms and hospitality rooms with narrow vanities. They also suit projects that need a mirror above each basin of a double vanity. In that case you buy two units per vanity, so state the quantity per vanity type in your schedule.

When you size a compact mirror, watch the proportion against the vanity. A mirror that is too small makes the wall look empty. A small round form can help in tight rooms, and the round LED mirrors collection is the place to look when a rectangle will not fit the wall.

Wide formats for long vanities

Long vanities call for long mirrors, and the larger catalog sizes are where those live. The KS007 series lists KS007-7232 at 1817 × 810 mm and KS007-8432 at 2130 × 800 mm. The KS005 and KS006 series list the same sizes under their own model codes.

The RGBB and KS008 series list KS-RGBB5928 and KS008-5928 at 1500 × 700 mm, and KS-RGBB5535 and KS008-5535 at 1390 × 750 mm. The first figure is much larger than the second, which tells you the shape is strongly elongated. Confirm which direction each figure runs against the model spec sheet.

The BBR series reaches KS-BBR4032 at 1005 × 805 mm and KS-BBR4832 at 1205 × 805 mm. The KS001 series lists KS001-8432H at 2133 × 803 mm, which is among the largest sizes in that series.

Large mirrors add weight and handling risk. Ask the factory about packing and any handling guidance for the model you choose. Also plan the wall support and the route into the building. A mirror that cannot pass through a stairwell or a door is a problem no size guide can fix.

For long vanities, check that the mirror stays clear of side walls. A mirror that nearly touches a wall looks like a mistake, so leave a visible margin on both sides.

How the lighting layout interacts with mirror size

The lighting layout is not decoration. It changes how much of the glass is clear reflection and how the mirror reads from across the room. Size and layout have to be chosen together.

Perimeter bands: thin, wide, double and edge

The four perimeter families look different at the same size. The Thin Outline Rectangle LED Mirror uses a thin continuous luminous line around the perimeter. The Edge Lit Rectangle LED Mirror has a continuous luminous border at the outer edge and a clean reflective center. The KS006 series places a broad rectangular band inside a dark outer margin, with controls shown near the lower edge. The KS008 series uses two closely spaced luminous lines.

Because the band sits at the perimeter, it takes space from the usable center. A wide band on a small mirror leaves less clear glass than a thin line on the same mirror. When the vanity is small, lean toward thin layouts or step up one size to recover the reflective area.

Confirm the exact reflective area with the factory. The catalog gives you the outer size only, and we do not assume a clear-glass figure for any model.

Think about the room as well as the mirror. A bright perimeter band reads strongly in a small, dark room, and it reads more softly in a large, well-lit one. If your project has a mix of room sizes, you can use the same series everywhere and change only the mirror size, which keeps the look consistent while the proportions adapt.

Rear halo and the RGB option

The KS001 series puts a rear halo around a clean, uninterrupted reflective center, which keeps the face of the mirror open. The RGBB series combines a broad white perimeter band with multicolor light behind the outer edge.

Rear halo layouts suit rooms where you want a floating look. The RGB layout suits hospitality and retail spaces where color is part of the design. Ask the factory to confirm the control behavior and the available light settings for the model you select, because the catalog does not list color temperatures for these series.

The right layout depends on the brief. For a quiet residential feel, keep the band thin. For a statement wall, choose a wide band or a double line, and size up so the center stays generous.

Accessible rooms and the ADA mounting rule

Accessible bathrooms add a hard constraint to your size calculation: the mounting height. For these rooms, the federal rule is clear, and you should read it directly. See ADA Standards section 603 (toilet and bathing rooms), which sets the bottom edge of the reflecting surface at no higher than 40 inches above the floor when the mirror is over a lavatory or countertop, and 35 inches otherwise, per 2010 ADA 603.3.

This rule affects size because the bottom edge position limits how much height you have above the vanity. A tall mirror hung at the allowed height may reach too close to the ceiling or the lights. You may need a shorter mirror, or a different layout, to meet both the rule and the visual balance.

Check the rule that applies to your jurisdiction and project type with your design team. Then give the factory the required mounting height on your schedule so the quote reflects it. Do not leave this for the installer to solve on site.

Sizing by project type

A practical vanity mirror size guide changes with the building type. The same mirror can be right for one project and wrong for another, so tie your choices to the way the building is used.

Hotels and hospitality

Hotel rooms need repeatability and a strong first impression. Pick one or two vanity types and one mirror per type. Landscape formats suit hotel vanities with a wide counter, and the RGBB layout gives a design option where color is part of the brand.

Ask for a sample of the exact model before you commit to a large quantity. MOQ, samples and lead time are confirmed in the written quotation per model, and SANIKB replies within 12 business hours.

Multifamily and apartments

Multifamily projects favor value and consistency. Bathrooms are often similar across units, so a small number of mirror sizes will cover most of the building. The compact and mid-range sizes suit this work, and the clean layouts of the KS005 and KS001 series keep the look simple.

List the quantity by unit type in your schedule. A mismatch between the schedule and the field is the most common reason for delivery disputes on this kind of job.

Distributors face a different question: which sizes to stock. Start with the sizes that appear in several series, because they let you offer a choice of layouts at the same footprint. Then add a few larger sizes for long vanities. Browse the full LED mirror catalog to see the range before you plan your stock.

Common sizing mistakes

Most sizing errors come from a handful of habits. Watch for these and you will avoid most reorders.

The first mistake is choosing a mirror from a room photo. A photo hides the real vanity width, the faucet position and the ceiling line. Always size from your own elevation.

The second is reading the catalog size as a clear-glass size. The size is the outer size of the product, and the lighting band takes space inside it. Ask the factory what the usable reflective area is.

The third is naming axes that the catalog does not name. If you write width and height into a contract without confirmation, you create a dispute risk. Use the catalog string until the factory confirms in writing.

The fourth is mixing series on one project without checking the installation details. A swap that looks harmless on paper can change the mounting and the power entry.

The fifth is ignoring orientation. A size that works in portrait can look wrong in landscape, and the reverse is true too. Decide first, and record the orientation on every schedule line.

The sixth is leaving accessibility to the end. If the project needs accessible rooms, set the mounting height early, because it limits the size you can use.

How to build a sized schedule for your quote

A sized schedule turns the guide into an order. Keep it short, and use one row per configuration. A change in size, series or orientation should be its own row, not a note in the margin.

For each row, record these items: the series and model code, the catalog size string in mm, the orientation, the vanity type it serves and the quantity. Add the mounting height if the room is accessible. Add a note for anything you have asked the factory to confirm.

Next, attach your elevation for each vanity type. It shows the factory and your installer the same picture, and it makes questions easy to answer. Mark the basin centerline, the faucet position and the ceiling line.

Then list the items you want in writing. Ask the factory to confirm the size, the orientation, the mounting details, the control behavior and any packing guidance. Confirm against the model spec sheet, and keep the answers with your order file.

Finally, state your delivery needs. MOQ, samples and lead time are confirmed in the written quotation per model. Having your schedule ready lets the factory answer fast, and SANIKB replies within 12 business hours.

Catalog sizes are printed in mm with no axis labels, so confirm each figure against the model spec sheet before you schedule it. This single habit prevents most field problems.

When you review the schedule with your team, read it as an installer would. Can someone who has never seen the project find the right mirror for the right vanity from the row alone? If not, add the missing detail. A schedule that reads clearly to a stranger is a schedule that survives staff changes, site visits and a long delivery window. Use this vanity mirror size guide as the checklist behind that review.

Request a quote for your sized schedule

Ready to turn your elevation into an order? Send your model, size and quantity for each vanity type, and we will confirm the details in a written quotation. The BBR series lists 20 catalog sizes, and each of the KS001, KS005, KS006, KS007, KS008 and RGBB series lists 15. Start from the LED bathroom mirrors collection, then request a quote with your schedule attached.

Frequently asked questions

How big should a bathroom mirror be over a single vanity?

A bathroom mirror over a single vanity should sit a little narrower than the vanity top and center on the basin. Check the faucet, splashback and ceiling line on an elevation first. Then pick a catalog size and request written confirmation from the factory before you schedule it.

Should I choose portrait or landscape for a vanity mirror?

Portrait suits narrow vanities, while landscape suits longer vanities that need one clean reflection. The BBR and KS001 series are shown in both layouts. Decide orientation before size, record it on every schedule line, and request written confirmation from the factory on any mounting limits for the model.

Can I read the catalog sizes as width and height?

Catalog sizes are printed in mm as pairs, but the catalog prints no axis labels. So do not label the figures width or height in your documents without proof. Copy the size string exactly, keep it with its model code, and confirm against the model spec sheet.

Which LED mirror series offers the most sizes?

The BBR series lists the most sizes, with 20 in the catalog, while the KS001, KS005, KS006, KS007, KS008 and RGBB series each list 15. Larger sizes sit mainly in the KS007, KS005 and KS006 series. Request the full size list for your short-listed series when you ask for a quote.

— Rokan, SANIKB