Gun safes are classified by using two different methods: Construction Ratings and Test Performance Ratings.The first ones concern burglar protection and the second ones mean that the safe meets the standards.The best rated gun safe should have at least B or C burglary resistive classification and 1 hour fire rating. It should be tested and approved by independent, highly reputable laboratories. Among such companies, there are burglary and fire testing agency United Laboratories (UL) and ASME certified companies. Besides to certifications, the brands which sell highly rated safes offer a life time warranty to ensure their future owners that their gun safes have high quality and will serve long.