Because “VESA” is the first filter (and saves on returns)

Because “VESA” is the first filter (and saves on returns)

When you buy a TV mount or monitor arm , what determines whether it fits or not is the VESA standard : the distance (in millimeters) between the threaded holes on the back of the screen. If the VESA doesn't match, there's no way around it: it either won't fit or it will be insecure.

On smaller monitors and screens, the most common VESA is 75x75 and 100x100 (MIS-D). Ergotron describes MIS-D as the most common interface on small monitors and TVs, typically with M4 screws .
For larger TVs, it is common to find larger resolutions (e.g., 400x200, 600x400), usually associated with VESA MIS-F .

1) How to measure your VESA in 30 seconds

All you need is a measuring tape (ideally in mm).

  1. Turn the screen over (carefully) and locate the threaded holes on the back.

  2. Measure from center to center between the holes:

    • horizontal (left → right)

    • vertical (up → down)

  3. The result is your VESA, for example:

    • 100x100 (very common monitor)

    • 400x400 (standard TV)

    • 600x400 (larger TV)

Tip: If the screen has multiple sets of holes, choose the set recommended in the manufacturer's manual (many TVs offer more than one position).

2) VESA MIS-D vs. MIS-F: What changes in practice?

MIS-D (small monitors and TVs)

  • Typical sizes: 75x75 and 100x100

  • often secured with M4 screws.

MIS-F (larger TVs)

  • VESA MIS-F patterns typically involve larger sizes, often in 200 mm increments (e.g., 400x200, 600x400).

This matters because monitor mounts rarely accept large VESA mounts, and TV mounts have plates and hardware designed for higher loads.

3) VESA screws: M4, M6, M8 (and why not "any")

The screw diameter is not universal. In MIS-D, the most common reference is M4 .
On TVs with larger screen sizes, M6 and M8 appear frequently (depending on the model/size).

The critical point is the length. Even with the correct diameter, a screw that is too long can internally damage the TV/monitor. Therefore:

  • Use the screws supplied in the mounting kit whenever possible.

  • If you need others, check the screen's manual for the recommended depth.

4) “The support says 32–75” — that’s not enough.

Many brackets only indicate "compatible inches." This is helpful, but it's not a replacement for:

  • VESA compatible

  • maximum weight (kg) supported

  • Type of support (fixed/tilt/articulated) and how this increases stress on the wall.

A hinged ("full motion") bracket creates more "leverage" on the wall than a fixed one. This is especially important on hollow/plasterboard walls (we discussed this in Cluster #3).

5) Monitors: table arm (clamp/grommet) and "hidden" VESA mount

On many monitors, the VESA is:

  • behind a lid

  • or requires removing the original foot

  • or does it come with a spacer/adapter?

Before you buy:

  • Check if your monitor is "VESA ready".

  • VESA confirmation (75x75 / 100x100 are the most common)

Gas spring arm: excellent for ergonomics, but pay attention to the minimum/maximum weight range of the arm. If the monitor is too light, some arms "rise on their own"; if it is too heavy, they fall.

6) Quick ergonomics: which monitor arm is worth it?

If you buy a monitor arm, the goal is to adjust it:

  • height

  • distance

  • angle

OSHA recommends that the top of the monitor be at eye level or slightly below, and that the center of the screen be typically 15–20° below the horizontal line of sight.
CCOHS emphasizes that placing the monitor approximately 15° below the horizontal creates a "preferable viewing zone".

This reduces neck strain and helps with prolonged work.

7) Purchase checklist (VESA + screws + compatibility)

Before finalizing your purchase, you confirm:

  • VESA screen resolution (mm × mm)

  • VESA supported by the mount/arm.

  • Screen weight vs. stand capacity

  • Type of support (fixed/tilt/articulated/gas lift)

  • Correct screws (diameter and length)

  • Space for cables and movement (especially on articulated buses)

FAQ

How do I know if my monitor is 75x75 or 100x100?
Measures center-to-center on VESA mounting holes. MIS-D is typically 75x75 or 100x100.

Will an M4 screw fit a large TV?
Not always. On larger TVs, M6 or M8 are common (depending on the model). Check the manufacturer's manual.

Does MIS-F always mean 400×400?
No. MIS-F includes several larger sizes (e.g., 400×200, 600×400, and others).