Mount TV wall bracket on aerated concrete / plasterboard

28 Aug 2022
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I would like to attach a flexible TV wall mount to a wall with a total width of 12 cm. Since I'm a sub-tenant in the flat, I don't know what exactly this wall is made of, but it's for sure not concrete or brick, because it's more of a "hollow" sound when you knock on the wall. Considering that the ceiling is not made of plasterboard, I assume that it is aerated concrete. There is a bathroom on the other side of this wall.

I intend to use Fischer UX or Duopower wall plugs. Please recommend which ones are better and if it is enough to use 4 or would it be better to have more, e.g. 8?

In case the wall is made of plasterboard, will these Fischer wall plugs be ok? Do you recommend any other wall plugs?

What length of inserts should I use?

Thanks in advance for any help.
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