Quote Originally Posted by Chubby View Post
I have seen a wall safe embedded in a concrete floor. It came out very easily as it lacked the necessary depth.

I suppose it would be good to install a wall safe as the wall is being built. That way the owner could get some serious fixing on the back.
In the past I have seen European safes which could only be installed during construction because they had a 2 inch rim at the front and back to slot around the concrete blocks....Mondial perhaps?