Fireproof Home Safes: UL Fire Rating and Capacity, Explained

The label is a kind of claim before it is a number

Three different things on these eight product pages read like the same fire rating. SentrySafe and Honeywell put “UL Classified” or “UL Certified” beside a temperature and a duration: 1 hour at 1700°F for the SFW123GDC and the 1108, 2 hours at 1850°F for the STW123GTC and the 2605, 30 minutes at 1550°F for the 1102. First Alert’s 2037F carries “UL Rated” in its product title with a 30-minute, 1,550°F figure. Hollon states 2 hours at 1850°F for the HS-610E, but its own certification page says the 2-hour home line is KIS Certified and JIS Certified, and that UL Listed status belongs to its separate TL-15 burglary-rated PM series. First Alert’s operation manual for the 2575DF family says only that “testing shows” the interior stays below 350°F for 2 hours in a fire up to 1700°F, and the word UL does not appear in that fire-rating language.

Those three are not interchangeable. A UL classification means an independent lab ran the test and verified the result. A KIS or JIS certification is another standards body’s test. A “testing shows” sentence is the manufacturer describing its own result. The hours and degrees can match exactly, as they do between the Hollon and the two UL 2-hour safes, and the assurance behind them still differs. If UL classification is the reason you are shopping, the Hollon and the 2575DF drop out before you weigh anything else, whatever their other merits. If you are content with a manufacturer-stated or overseas-certified test, both come back in, and the 2575DF brings the largest capacity figure here with it.

One hour or two: what the evidence can and cannot settle

What the evidence settles precisely is the cost of the second hour, because SentrySafe sells both durations in one cabinet.

The SFW123GDC and STW123GTC share a 17.8 in H x 16.3 in W x 19.3 in D exterior, a 13.8 x 12.6 x 11.9 in interior, four 1-inch locking bolts with a pry-resistant hinge bar, a digital keypad with key override and an ETL Verified rating for 8 inches of water for 24 hours. Three things differ. The 1-hour model is rated at 1700°F and the 2-hour model at 1850°F. The 1-hour model weighs 86.69 lb and the 2-hour model 128.2 lb. The 1-hour model has 1.23 cu ft inside and the 2-hour model 1.19 cu ft.

So the 1-hour-versus-2-hour decision, for this pair, is whether a longer rating at a higher temperature is worth the extra weight to carry into position and a slightly smaller interior. The SFW123GDC’s page also lists bolt-down hardware, which the STW123GTC’s page does not.

The 30-minute chests are a separate step down. The Honeywell 1102 and the First Alert 2037F are both rated at 1,550°F for 30 minutes, lower and shorter than every 1-hour pick.

Fitting a hanging folder versus a passport

Cubic feet are the figure on the box and the one most likely to mislead. The Honeywell 1108 has 1.06 cu ft, and Honeywell states the 10.16 in H x 15.00 in W x 12.01 in D interior is sized for letter, A4 and legal hanging folders. The SentrySafe SFW123GDC has more volume at 1.23 cu ft, but its interior is 13.8 in tall, 12.6 in wide and 11.9 in deep, and SentrySafe publishes no statement about hanging folders. The extra volume is height. The Honeywell 2605 is 12.7 in tall and 9.8 in wide. The Hollon HS-610E is 16 in tall, 14 in wide and 11⅝ in deep, with adjustable shelves, which no other pick lists, and a sliding drawer. The First Alert 2037F is described as designed for hanging file folders at 0.62 cu ft, but First Alert publishes no interior dimensions to check that against.

The Hollon’s 14 in width and shelving come closest among the keypad safes, without a folder claim.

If the contents are passports, a deed and a drive, the question inverts. The Honeywell 1102 has 0.15 cu ft at 4.57 in H x 9.65 in W x 6.02 in D, and Honeywell sizes it for folded letter documents, not hanging files. A deed goes in folded. Everything else in this comparison is many times that size.

The gap between inside and outside is worth seeing once. The SentrySafe exterior of 17.8 x 16.3 x 19.3 in surrounds a 13.8 x 12.6 x 11.9 in interior. Measure the spot you have against the exterior and the contents against the interior, and treat the two numbers as unrelated.

The backup drive is a separate question from the documents

First Alert and Hollon state the pass condition for their 2-hour tests as an interior below 350°F, and most of these manufacturers make no separate claim about drives.

Two do. First Alert says the 2037F is “independently verified to protect digital media, such as memory sticks, CD’s, DVD’s and external hard drives.” The 2575DF manual states “Verified fire protection for: Memory sticks, CD’s & DVD’s, USB Drives.” SentrySafe markets the SFW123GDC as protecting “critical documents, digital media and valuables” without a separate temperature ceiling for electronics. For the STW123GTC, all three Honeywells and the Hollon, no retrieved document mentions drives or media at all.

That produces a gap no single pick closes. No safe here combines UL Classified 2-hour language with a named drive claim. The UL 2-hour picks say nothing about drives; the picks that name drives are either rated for 30 minutes or carry no UL language. You are choosing which assurance to go without, and the silence on the other side does not mean the drive would fail, only that nobody has promised otherwise.

Water is the rating most buyers never check

Fire suppression puts water on everything, and the published water figures here diverge more than the fire ratings do. The two Honeywell chests, the 1108 and the 1102, are certified for 100 hours of protection at up to 1 meter (3.28 ft). Both SentrySafe models are ETL Verified for 8 inches of water for up to 24 hours. The Honeywell 2605 is rated for 8 hours at the same depth. Neither First Alert pick publishes a depth or duration. Hollon describes a grooved door with a recessed curvature it calls water resistant, with no figure.

Set those side by side and the pattern is plain: the chests with key locks and compression latches carry the strongest water figures, and the keypad safes trade down, from 24 hours to 8 hours to nothing. If sprinklers or a hose stream are part of what you are insuring against, the 1108 is the only hanging-folder option with a 100-hour figure, and the STW123GTC is the only UL 2-hour pick with a 24-hour one.

Lock, bolts and weight are the theft half of the decision

A keypad is a convenience choice. Both SentrySafe models, the Honeywell 2605 and the First Alert 2575DF publish override keys; Hollon publishes no mechanical override for the HS-610E’s electronic lock. The security claim rests on the bolt-work, which is the manufacturer’s own description and not an independent burglary rating. Hollon’s ratings page is explicit that its UL Listed burglary ratings apply to a different series.

The three chests have no bolts. The Honeywell 1108 and 1102 use a privacy key lock with compression latches, and the First Alert 2037F uses a single clamping latch with a key. Among the keypad safes, SentrySafe publishes four 1-inch bolts plus a hinge bar on both models; the Honeywell 2605 and First Alert 2575DF each list 2 live and 2 dead bolts, with the 2575DF adding a 5-minute lockout after 3 failed attempts and the 2605 adding an audible motion and tilt alarm with programmable sensitivity; the Hollon lists 2-way chrome bolt work with fixed hinge-side bolts and a keypad for up to 4 users.

Anchoring decides whether the fire rating matters at all. The 1102 weighs 18.9 lb with a carry handle. The 1108 weighs 80.5 lb and publishes no anchor holes. The 2037F publishes no weight. The STW123GTC lists no anchor hardware. Three picks ship ready to fix down: the SFW123GDC with bolt-down hardware, the 2605 at 109.2 lb with pre-drilled holes and hardware, and the Hollon at 187 lb with a concrete anchor bolt. Heavy is not the same as fixed, and the 2605’s alarm is the only published feature here that responds to the safe being moved.

When the small chest is genuinely enough

The Honeywell 1102 is enough when three things are true at once: your documents fit folded in a 9.65 x 6.02 in footprint, you accept a 30-minute rating at 1550°F in exchange for a 100-hour water rating, and theft resistance is not what you are buying. It stops being enough the moment you want an hour or more of rated protection, a drive claim, or anything you cannot walk out with.

The First Alert 2037F is the equivalent answer for a few hanging folders and a drive: the clearest media claim here at 0.62 cu ft, also 30 minutes, with no water figure at all.

Two category details are easy to miss. Honeywell publishes a lifetime after-fire replacement guarantee on the 1108, 1102 and 2605 alongside a 5-year limited warranty; BRK publishes the same pairing for the 2575DF; Hollon offers a lifetime fire guarantee with a 1-year parts and labor warranty; no warranty appears in the SentrySafe pages retrieved. And the Amazon listing for the Honeywell 1108 is the 1108W, which bundles the same 1.06 cu ft chest with a wheel cart, so check Honeywell’s own store if you want the chest alone.