Best Fireproof Safes and Document Boxes for Home Paperwork (2026)

Most households keep their most important papers (passports, birth certificates, the house deed, insurance policies, a few years of tax returns) in a drawer or a filing box. That works until the day there is a kitchen fire or a burst pipe. A fire-rated box is one of the cheapest ways to make that bad day less bad.

The problem is that “fireproof” on a product title means almost nothing on its own. What matters is who tested it, for how long, and at what temperature. This guide compares four currently sold SentrySafe models on exactly those numbers, then explains how to choose between a small chest and a floor safe. For how the labels work, see our guide to reading fireproof safe ratings.

We do not hands-on test products. Ratings and dimensions below come from SentrySafe and Master Lock technical literature, cited at the end. Every model on this list had a live manufacturer page when we checked.

The short list

Prices change often, so we do not list them here. Check the current price on each product link.

How to read a fire rating in 60 seconds

Independent labs such as UL and Intertek (which issues the ETL mark) heat a safe in a furnace and monitor the temperature inside. Under the UL 72 standard, a Class 350 rating is the one intended for paper records: the interior must stay at or below 350°F for the rated time. So a rating of “1 hour at 1700°F” means the box was exposed to a furnace fire for an hour and its interior stayed within the paper limit.

Three practical consequences:

1. Duration matters more than peak temperature. A typical house fire moves through a room quickly, but a fire that brings down floors can leave debris smouldering on top of a safe for a long time. One hour gives a much bigger margin than 30 minutes.
2. “Fire resistant” without a lab name is a marketing word. Every model on this list names its lab. Treat unnamed claims with caution.
3. Paper ratings are not media ratings. UL 72 has separate, stricter classes (Class 150 and Class 125) for photographic and magnetic media. SentrySafe states that these models are also ETL verified to protect digital media such as USB drives. If you plan to store drives, look for that line specifically.

1. SentrySafe CHW20221: the starter box for a single drawer of papers

Best for: renters, small apartments, anyone who mainly needs passports and certificates protected.

SentrySafe CHW20221 Fire/Water Chest (check current price)

The CHW20221 is the kind of box many people already picture when they hear “fire box”: a resin-cased chest with a carry handle and a tubular key. According to SentrySafe’s store listing, it is UL Classified for 1/2 hour at up to 1550°F and ETL Verified to protect contents from flood damage for up to 72 hours. The interior measures 4.4 x 12.8 x 8.5 in (0.28 cu ft), enough for letter-size papers laid flat plus a passport wallet. There is an organizer in the lid for small items. Weight is listed as 20.4 lb.

Trade-offs to know:

• 30 minutes is the shortest fire rating on this list.
• The key lock is a privacy lock, not theft protection. Someone can simply carry the box away.
• Fire insulation holds moisture, so store photos or anything delicate in a sealed bag inside.

2. SentrySafe CFW20201: the same size chest, with a full hour of fire time

Best for: people who want one hour of fire protection in a chest they can still carry.

SentrySafe CFW20201 Fire/Water Chest (check current price)

The CFW20201 is the same class of portable chest, with the same 0.28 cu ft interior (4.4 x 12.8 x 8.5 in) and a tubular key lock. Master Lock’s technical literature for the model rates it UL Classified for 1 hour at up to 1700°F and ETL Verified for water protection up to 72 hours, and lists it as protecting digital media. Weight is about 20 lb, with a carry handle.

Compared with the CHW20221, you get twice the fire duration in roughly the same footprint. That is the main reason to spend more on this chest.

Trade-offs to know:

• Like any chest, it can be carried away. Pair it with a hidden location rather than relying on the key.
• Interior capacity is the same as the CHW20221, so it will not hold a large file stack.

3. SentrySafe FPW082KSB: an upright safe with a mechanical lock

Best for: people who want an upright safe that does not depend on batteries.

SentrySafe FPW082KSB Fireproof Waterproof Safe (check current price)

The FPW082KSB steps up to a front-opening safe. Master Lock’s technical literature lists UL Classified fire protection for 1 hour at up to 1700°F, ETL Verified water protection in up to 5 inches of water for 24 hours, digital-media protection, three 1-inch live-locking bolts, a pry-resistant hinge bar, a fire-and-water bolt-down kit, and a combination dial with an override key. Interior capacity is 0.81 cu ft (about 9.6 x 12.4 x 11.5 in). Weight is listed as 55 lb. No batteries are required for the lock.

Trade-offs to know:

• The water rating is for standing water up to 5 inches, not full submersion. If basement flooding is your main worry, a chest with a 72-hour flood rating (CHW20221 or CFW20201) is stronger on that axis.
• Dials are slower to open than keypads. Practice the combination when the safe arrives.
• At 55 lb it is not a grab-and-go box. Plan where it will live, and use the bolt-down kit if you can.

4. SentrySafe SFW123GDC: the most room, the most features

Best for: households keeping documents, a laptop-size item, and cash or jewellery together.

SentrySafe SFW123GDC Fireproof Waterproof Safe with Digital Keypad (check current price)

This is the largest model here at 1.23 cu ft (interior 13.8 x 12.6 x 11.9 in). SentrySafe lists it as UL Classified for 1 hour at up to 1700°F, ETL Verified for water resistance in up to 8 inches of water for up to 24 hours, with solid-steel construction, pry-resistant hinge bars, bolt-down hardware, a backlit digital keypad with a secondary key lock, an interior light and an adjustable locking drawer. Weight is listed as 86.69 lb.

On SentrySafe’s own product page, owners report that the key is a secondary lock (if you lock it with the key, unlock the key before the code will work) and that sporadic keypad problems often clear after switching to fresh name-brand alkaline batteries. Both tips are worth knowing before you assume the safe is faulty.

Trade-offs to know:

• The water rating is for shallow standing water (8 in), not full submersion.
• The keypad depends on batteries. Keep spare batteries and the key somewhere outside the safe.

Chest or floor safe? A quick decision guide

What to put in it (and what not to)

A fire box is most useful when it holds the papers that are slowest to replace:

• Passports, birth and marriage certificates, Social Security cards
• Property deeds, vehicle titles, and a copy of each insurance policy
• Wills and powers of attorney (some attorneys keep the original, so check yours)
• A USB drive with scans of everything above, if your model is rated for digital media

Manufacturers advise against storing pearls or very delicate items, because damage can occur below the 350°F paper threshold. Do not store medication or flammable materials. And because fire insulation contains moisture, a few silica gel packs and sealed bags help keep papers crisp.

When you no longer need a paper copy, shred it rather than leaving it in a drawer. See our document retention guide and shredder buying guide.

A note on “fireproof”

No home safe is truly fireproof. Each one is rated for a set time at a set temperature, and UL itself notes that its fire tests may not represent every real fire. SentrySafe advertises an after-fire replacement guarantee and typically requires product registration, so fill in that registration on day one.

Bottom line

If you only need passports and certificates covered, a rated chest such as the SentrySafe CHW20221 is a sensible starting point. If you want a one-hour rating you can still carry, step up to the SentrySafe CFW20201. For an upright safe, choose the SentrySafe FPW082KSB if you prefer a mechanical lock, or the SentrySafe SFW123GDC if you want the most space and a digital keypad.

Sources: SentrySafe store listing for CHW20221 (store.sentrysafe.com/products/chw20221); Master Lock technical literature for CFW20201 (solutions.masterlock.com, 1 hour / 1700°F, ETL water up to 72 hours, 0.28 cu ft, ~20 lb); Master Lock technical literature for FPW082KSB (1 hour / 1700°F, ETL water up to 5 in / 24 hours, 0.81 cu ft, 55 lb, combination + override key); SentrySafe product page for SFW123GDC (www.sentrysafe.com/product/SFW123GDC); UL 72 Class 350 context as explained in our ratings guide. Checked November 9, 2026. Older Honeywell 1114 / First Alert 2087F-BD listings were dropped because we could not confirm current retail availability.