Quick summary: The right extension depends on how far you need to pull your TV away from the wall and how much you need to swivel it. If the screen usually stays parallel to the wall, a long extension is generally unnecessary. If you watch from different parts of the room, install the TV in a corner or need to turn it substantially, a longer arm will be useful.
When choosing a TV wall bracket, most people first check the screen size, maximum supported TV weight and VESA pattern. But full-motion models have another specification that directly affects adjustment: the distance from the wall. Here we explain what a longer extension actually offers, when it is worthwhile and how to choose the right option for your room and TV.
What Is TV Wall Mount Extension?
Extension is the distance a bracket allows you to move the TV away from the wall. For full-motion models, manufacturers usually specify a range, such as 55–434 mm. The minimum is the distance when the bracket is folded back; the maximum indicates how far the TV can be pulled forward.
A long extension is not just about bringing the screen closer to the viewer. Its main benefit is the extra clearance it creates for swivelling. This makes maximum extension especially important if you want to direct the screen towards different areas of the room or turn it significantly relative to the wall.
What Determines the Extension You Need?
There is no single extension measurement that suits every TV of a given screen size. The extension you need depends on several factors.
Viewing position. If you always watch from a sofa directly opposite the TV, a wide adjustment range may be unnecessary. But if you watch TV from several positions, you may need to swivel the screen further and more often.
TV width. The wider the TV, the more clearance it needs for a substantial swivel. Two TVs with the same diagonal screen size but slightly different overall dimensions may therefore behave differently on the same bracket.
Required swivel angle. A small adjustment and swivelling the TV by almost 90° require very different amounts of space.
Mounting position. A wall opposite the sofa, a room corner and a space between furniture all present different requirements.
Furniture and walkways. What matters is not only how far the bracket can extend but whether the room has enough space for the TV to move.
When You Rarely Need to Swivel the TV
The simplest setup is a TV opposite the sofa or bed that stays parallel to the wall most of the time. A long maximum extension is usually unnecessary here. If the screen never needs repositioning, consider a fixed or tilting bracket instead.
If you still want a full-motion bracket, perhaps to make occasional small adjustments, consider the minimum distance from the wall as well as the maximum. For example, the ONKRON TM6 tilting bracket keeps the TV just 35 mm from the wall.
We explain the differences in our article “Types of TV Wall Mounts: What’s the Difference?”.
When You Only Need a Small Swivel
Suppose you usually watch TV from the sofa but occasionally want to angle it towards an armchair or dining table. You do not necessarily need a very long arm. The key is to move the screen far enough forward that its edge does not hit the wall when swivelled.
For example, the ONKRON R4 full-motion bracket extends up to 420 mm from the wall. A compact TV bracket of this kind suits setups where the screen needs to move and change direction without extending far into the room. If you regularly want to face the TV towards different areas, a short arm may not provide enough movement.
When You Watch TV from Different Areas of the Room
In an open-plan kitchen and living room, studio flat or large room, the same TV area may serve several purposes. You might watch from the sofa in the evening and want to turn the screen towards the dining table during the day. A longer extension offers considerably more flexibility. The ONKRON M6L, for example, adjusts from 55 to 434 mm from the wall. When facing forward, the TV can sit closer to the wall; when you need another viewing direction, you can pull it forward and swivel it.
Before installation, check not only the TV position against the wall but also the space it occupies when extended. The screen should not obstruct walkways or hit furniture or opening cupboard doors.
For kitchen and open-plan layouts, see our article “TV in the Kitchen: How to Position It Neatly and Safely”.
How Much Extension Do You Need for a 90° Swivel?
If you want the TV to turn almost perpendicular to the wall, you can make an approximate assessment of the required clearance before buying a bracket.
Measure the full width of the TV and divide it by two. For example, if the TV is 120 cm wide, the distance from the centre to either side is about 60 cm. To approach a 90° position relative to the wall, the central part of the TV will need to move forward by roughly a comparable distance.
This is only a guide, not a universal formula. The actual geometry depends on the position of the VESA mounting holes, the bracket design and pivot points, the thickness of the TV and the wall mounting position. If a 90° swivel is essential, do not choose a bracket based on the calculated minimum alone: check the geometry of your particular TV and bracket combination.
When Do You Need 60–70 cm of Extension or More?
An extra-long extension is unnecessary in many TV setups. But there are several situations where a long arm makes installation considerably more flexible.
One is a large TV that needs to swivel substantially. Another is an unusual room layout where the suitable mounting wall is away from the main viewing position. A long extension is also particularly helpful for corner installation.
For these situations, consider the ONKRON NP47, with an extension range of 65–707 mm. Its long arm lets you bring the TV well forward and gives you more room to adjust its direction. Maximum extension is an available setting, not necessarily the TV’s permanent position. When a large swivel is unnecessary, the bracket can be folded back to bring the screen closer to the wall.
Extension for Corner TV Installation
A corner is one of the places where arm length matters most, because you need to account for two walls. With a short extension or poorly chosen mounting point, the edge of the TV may hit the adjacent wall before the screen reaches the required angle. First decide which direction the TV should face during viewing, then choose the mounting position and adjustment range.
Do You Need a Long Extension in a Small Room?
Room size alone does not determine the extension you need. If a TV in a small bedroom is mounted opposite the bed and rarely swivelled, a long arm is unlikely to offer much benefit.
But consider a TV near a corner that needs to face either the bed or a desk. Extra extension could make better use of the limited space. Check the TV’s position when fully extended: it must not block a walkway or be somewhere it could easily be knocked.
See our article “TV in a Small Room: Placement Ideas and Space-Saving Solutions” for other compact-room setups.
What to Check Before Buying
Picture the TV not only in its usual position but also when you are using the bracket’s full adjustment range.
Before buying, check:
- where you will usually watch TV from;
- whether there are other viewing positions;
- how far you need to swivel the screen;
- the TV’s actual overall width;
- the bracket’s minimum and maximum extension;
- whether the screen could hit a wall or furniture as it moves;
- whether walkways remain clear;
- whether connected cables have enough slack at full extension.
Then check the bracket’s overall compatibility with the TV: supported screen size, maximum TV weight and VESA pattern.
If this is your first wall bracket, we explain these specifications in “How to Choose a Wall Bracket for Your TV”.
Common Mistakes When Choosing Extension
Going for the longest extension available. A long maximum extension only makes sense if you will actually use the extra reach.
Looking only at the advertised swivel angle. The bracket mechanism may have a greater range of movement than the TV can achieve once fitted, because of the screen’s dimensions.
Considering only the diagonal screen size. The actual TV width, not just its diagonal measurement, matters when swivelling.
Ignoring the minimum wall distance. If the TV spends most of its time facing forward, this is just as important as maximum extension.
Forgetting furniture and walkways. A bracket may extend a long way, but a cabinet, shelf or other furniture may obstruct its movement in your room.
Not leaving enough cable slack. Cables move with the TV when it is extended. A cable that is too short may become taut and restrict movement.
FAQ
Is a Longer TV Bracket Extension Always Better?
No. A long extension helps when you need to pull the TV far forward or swivel it substantially. If the screen almost always stays parallel to the wall, the extra reach may never be used.
How Can I Tell Whether the Extension Is Enough for My TV?
Consider the TV’s width, the swivel angle you want and the mounting position. The further you need to turn the screen, the more clearance you need between it and the wall.
How Much Extension Is Needed to Swivel a TV by 90°?
As a rough guide, start with about half the TV’s overall width. The exact position depends on the bracket design, VESA hole placement and the geometry of the TV, so this is only an estimate.
Why Can’t My TV Swivel as Far as the Advertised Angle?
The stated angle may describe the movement of the bracket mechanism. Once the TV is fitted, its width limits the available movement because the side edge approaches the wall at wider angles.
Does a Large TV Always Need a Long Extension?
Not necessarily. A large TV that always stays parallel to the wall may not need much extension. Extra reach matters most when a wide screen needs to swivel substantially.
What Extension Is Best for Mounting a TV in a Corner?
There is no universal measurement. Consider the TV width, the distance from the mounting point to the adjacent wall and the direction you want the screen to face. It helps to visualise or measure its full path of movement before installation.
Final Thoughts
The right bracket extension depends not just on TV screen size but on how the screen needs to sit and move in your particular room.
If the TV stays almost parallel to the wall, a long maximum extension is usually unnecessary. If you watch from several areas, mount the TV in a corner or regularly swivel it substantially, a longer arm gives you more freedom. ONKRON’s range of TV wall brackets includes models with different adjustment ranges, so you can choose one that suits your viewing area.
