Hello Stephanbö
Not "officially", the limit is 163g/m2 , see here under "Paper weight": https://support.brother.com/g...
In this price range, however, there are hardly any machines that meet this requirement.
Envelopes are possible, however (of course those without a window!), as described in the user manual.

From experience, however, I know that Brother's small laser printers can withstand quite a bit when it occasionally has to be heavier than the official 163g/m2. Tip: Straight paper path = insert a single sheet manually at the front via the cut-sheet feeder and leave the rear flap open. This also works with somewhat "special" papers.
Greetings