I've had one for years. It's a decent safe, but by no means a "high security" container. The sides, top, etc. are 10ga, and I have doubts about "real" protection in a hot fire. Any safes you buy in that price range have similar construction, so it is what it is. The sides of these safes are easily breached with a drill, torch, or any saw with a metal cutting blade. I have mine in a location where access to the sides is impossible. ALL of the safes are like this, and I'm just pointing out they are NOT bank vaults, so anyone unaware, knows what they are getting.
You will pay dearly if you want 1/4" construction, or greater.