Interesting looking, I can't recall seeing anything quite like it, before. The reason I asked , is because the normal closed cell stuff [crumbles into little balls of foam when cut or broken - hence closed cell description] , is normally a bit of a fire risk. It adds to any fire that may be started elsewhere, burning very vigorously, I can't see that being a massive problem, to be honest, given some other materials we model with.
However, it also doesn't like wiring insulation, reacting with it to break it down and resulting shorts can set it off, under it's own steam. It is possible to run wiring through simple ducting, to keep it separate, where it runs adjacent, so it certainly isn't insurmountable, but well worth checking in advance.
Not having seen the boards you have got, I can't say either way, for sure. It may be worth taking a look to see what their label says on fire resistance. It should also be possible to Google their name for the "type" of foam board and see the full spec there.