Good day,

I need to setup a wifi network for a 40mx40m boardroom. Will the rbcapgi-5acd2nd AP's work and how many would i need?

Are there any Mikrotik AP's that you would recommend?

Thanks

I would use 4. Mount them in a square pattern of 20x20m.
No. But that is my personal opinion.

I would use 4. Mount them in a square pattern of 20x20m.
No. But that is my personal opinion.

I wouldn't think I would need more than 2 WAPs.

But they sure would not be rbcapgi-5acd2nd. (Ergo, I absolutely agree with pe1chl on the second point.)