Chair Mount Compatibility

These chairs / brands have been confirmed as (in)compatible.

However, it is good practice to double-check whether your chair is indeed compatible:
Aside from unlisted product updates, there can be outliers within a brand’s line-up.

You can use the Form template PDFs to do so; either via measuring, or by printing them at 100%.
These can also be found on the related product pages.


Rules of thumb for compatibility

  • Mounting points underneath the seat pan are required.

    • For chairs with Side mounted armrests, as found on the IKEA Markus, check whether the Universal Basis + Form 1 is a fit.

    • Mounting options with 2 bolts are doable, 3-4 is preferred.

  • Most ‘Gaming’ chairs with bottom-mounted armrests are compatible with Form 1 or 2.

  • Chairs with proprietary design elements, like alternative armrest assemblies and ‘streamlined’ seat pans, are often incompatible.

  • Most compatible chairs use Metric hardware.

    • In case your unit uses Imperial, relevant hardware has to be sourced locally.


Example of Bottom-mounted (/'Straight') armrest - Generally compatible with Form 1 or 2

Example of Bottom-mounted (/'Straight') armrest - Generally compatible with Form 1 or 2


Example of Side mounted armrest - Generally not directly compatible; see Universal Base

Example of Side mounted armrest - Generally not directly compatible; see Universal Base


Example of incompatible proprietary design

Example of incompatible proprietary design



If you're not sure, feel free to send us a message, and we will have a look.

Should you know of an (in)compatible chair that isn't listed, do let us know and we'll update the applicable list.


Special note ( *[] )

In certain cases, a chair is technically compatible, albeit with limitations to be aware of.
Examples of this include, but are not limited to:

  • The chair is compatible with the centre mount bracket, and the side mounts.
    However, for both to be used at the same time, you have to puzzle and stack.

  • Certain control elements occupy the same space as the Form plate, and require remounting or removal.

  • Special care has to be taken with the bolts, as the chair has capped inserts for the threads/limited room due to frame elements.


Were possible, we add the related note between the square brackets.