I am very pleased with my Sturdy safe, it truly is the thickest steel for the least amount of money. It is contstructed very well with tight tolerances around the door. I didn't get too wrapped up with fire lining since my biggest threat is a theft. I order mine without the fire lining. I live in a new construction home, less than a mile away from the fire department, the safe is located along an exterior wall, my alarm monitoring includes hard wired and wireless smoke detectors, and I don't have anything in that safe that isn't replaceable. I also carry an extra insurance policy to cover all of my firearms which covers them anywhere I take them.
If I ever move somewhere that causes me to be more concerned with protecting my firearms, I will wrap the safe in a few layers of drywall and get the door installation; for now, I like having the extra room.