ᐅ Flush-mounted electrical boxes for EIFS (Exterior Insulation and Finish Systems) using mineral wool insulation

Hi, I raised part of my house with a timber frame construction, which is insulated on the outside with wood fiber boards. The rest of the house will be insulated with 10cm (4 inches) mineral wool boards.

For wood fiber boards, there are the ECON® Iso+ boxes from Kaiser. Can I also use these for mineral wool boards, or are there different/better boxes available for that?

What do you recommend? Is there a (more affordable) alternative to Kaiser in this area?

Best regards,
Chris