Thread: where can i find a engineer to give e cat certificate?

i was looking at the sentry safes at H&F the other day.And am a little confused how they get around the 6mm steel plate thing for a e cat as the door on that was not 6mm more ike 3 folded to give the impression of a heavy door. I am interested to see what specs the police want in a e cat safe as I think most of the safes I have looked at seem very cheaply made.