Wyze Safe - cube form factor

I have been looking for a safe for years. Finding any old safe is not a problem, but I am looking for a safe that has everything the gun safe has, but in a cube formfactor that fits into an Ikea Kallax organizer. So it’s outer dimensions would be a millimeter short of 13in cube, just to give it a bit of wiggle room.

[Mod Edit]: Title modified to enhance search clarity.