A fireproof safe is the kind of thing you buy hoping its capabilities are never put to the test.But if the time comes, a fireproof safe is likely to be worth far more than you paid for it.We’ve tested nearly two dozen safes over the years, and we’ve even burned five of them in a controlled fire. We’re sure that the SentrySafe FPW082KSB is the best document safe you can get for your home or office.It’s independently rated to last longer in higher-temperature fires than other safes of its size, and it will keep its contents dry longer when it’s submerged in water. Of all the document safes available today, this model has the greatest potential to keep your stuff secure, including irreplaceable documents, photos, and essentials such as passports and birth certificates.Though you can find safes offering a greater degree of fire protection, they aren’t designed specifically for documents like our picks are. And they have other disadvantages: For starters, they cost at least three times as much as our top pick (and often several times more than that), and at 100 pounds or more, they weigh so much that they’re difficult to move once they’re in place. Plus, according to a fire expert we spoke to, their two-hour-plus protection ratings offer diminishing returns since most house fires are out within about an hour.