UNSOLVED Is this mirror okay?

[Schmaniel]

Hello!

I found this mirror:
https://www.myspiegel.de/spionspiegel-pg-2102.html (German site)

And wanted to ask if it would be okay or if I should look for another one.

Thickness: 8mm
Light transmission: 11 %
Light reflection: 42 %
Energy transmission: 13 %
Energy reflection: 34 %
Energy absorption: 53 %
UV transmission: 1 %
g-Value: 25 %

It seems a bit thick too me, but I’m not sure…