Sounds like a great safe, I have one of those gun safes and it is rated for 1500 F, but the inside can get as hot as 300 or 400 F....needless to say worthless....mine is about the same size you are mentioning and really are a good thing to have for other stuff the camera.....since having guns in Mexico is a real hassle I sold all mine but kept the safe to guard my photo equipment. Houses in Mexico are made of brick so fires are not very common, but burglars are......Go for the big one, it is a real good deal mine was really expensive and not as good for fire as yours sound.