
Mesa Safe MBF3820C Burglar & Fire Safe ($1,350)
- 2-hour fire rating tested up to 1830°F — twice the endurance of every 1-hour safe ranked below it.
- All-steel burglary construction with 1-inch bolts, a UL Listed Group 2 lock and a punch-activated relocker, where most of this field is steel-cased insulation.
- Limited lifetime warranty stated in the maker's own manual — the strongest written term in this ranking.
- At roughly 310 lb it is a freight delivery and a two-person-plus-equipment placement job, not a closet carry-in.
- There is no water rating at all: a basement flood reaches the contents through the door seam, so water-sensitive papers still need sealed inner storage.
- The dial combination cannot be changed by the owner — Mesa's own guidance is that a change requires a licensed safe technician, and an unlicensed attempt voids the lock warranty.
The MBF3820C is the only safe in this ranking built as a true burglary safe first: all-steel construction with a 4-1/2-inch fire-lined door and a 1-3/4-inch fire-lined body, three massive 1-inch solid-steel locking bolts, a drill- and punch-resistant UL Listed Group 2 combination lock with a relocking device, and four pre-drilled anchor holes. Its fire record is also the field's longest: factory rated for 2 hours in temperatures up to 1830°F, with a 2-story impact rating — the safe is drop-tested and reheated after the fire test. At 40 x 22 x 22 inches and 6.4 cubic feet inside, it swallows binders, drives and valuables that the consumer fire safes below cannot. Owner satisfaction is scored as a disclosed neutral: this model's own Amazon rating could not be isolated during our review window. A limited lifetime warranty in Mesa's own MBF manual and a published technical support line anchor its accountability score.
Mesa Safe Company is a US safe maker based in Orange, California, building all-steel burglary and fire safes; it publishes a technical support phone line in its own manuals, and the MBF series manual states a limited lifetime warranty for the line.
Mesa Safe MBF3820C Burglar & Fire Safe










