Fire ratings are a time and a temperature, and paper and drives differ · review
An A4 fire and water resistant document box in thermoplastic polycarbonate with a cement-bonded fire layer, which HMF states protects papers for up to 30 minutes.
The conclusion The A4 option, with a construction described and UL 72 stated at 843 °C (1549 °F) for 30 minutes. Good box; only the class is left unwritten.
Most fire boxes are sized for passports. This one is sized for the documents that are actually A4.
Deeds, surveys, certificates, insurance schedules and wills are A4, and folding them creates a crease that becomes a tear. A box that takes them flat costs more shelf space and keeps the papers usable.
At 36.5 × 32 × 15.5 cm (14.4 × 12.6 × 6.1 in) it is large for what it holds, and that is the trade.
A thermoplastic polycarbonate shell around a cement-bonded fire layer. That is the standard mechanism: the material holds water chemically and releases it as steam under heat, keeping the interior cool for as long as the water lasts.
Describing it at all is more than most listings manage.
HMF states UL 72 certification: thirty minutes at 843 °C (1,550 °F). The listing does not state the class; for paper, UL 72 uses Class 350, which keeps the inside below 350 °F (177 °C) — a figure HMF does not write itself.
The listing adds 72 hours of water resistance, with no immersion depth.
It locks with a cylinder, but 8.2 kg (18 lb) still leaves under one arm, and HMF itself advises a fixed place. Security is a separate product.
A household whose important papers are A4 and should stay flat.
Listed but with no offer on the American Amazon store — the reference exists there and nobody is currently selling it.
Prices and availability are what Keepa reported on the date this page was updated; both move.
| Capacity | A4 documents, flat |
|---|---|
| Dimensions | 36.5 × 32 × 15.5 cm (14.4 × 12.6 × 6.1 in) |
| Fire protection | 30 minutes at 843 °C (1549 °F), UL 72 certified per HMF |
| Construction | Thermoplastic polycarbonate with cement-bonded fire material |
| Water | Waterproof |
| Interior | 30.5 × 22 × 9 cm (12 × 8.7 × 3.5 in), 6 L |
| Weight | 8.2 kg (18.1 lb) |
| Lock | Cylinder lock |
| Amazon reference | B0FR515N1R |
| EAN | 4010537254230 |
Because folding a deed, a certificate or a survey creates a crease that eventually tears, and because a folded document is harder to find in a hurry. If the papers are A4 and important, a box that takes them flat is worth the extra size.
The class. HMF states UL 72 certification at 843 °C (1,550 °F) for thirty minutes without writing the class; for paper, the standard uses Class 350, which keeps the inside below 350 °F (177 °C). The boxes here that write “Class 350” can be judged without that inference.
It is the standard approach: a layer that holds water chemically and releases it as steam under heat, keeping the interior cool while it lasts. Describing the construction at all is more than most makers do; the internal limit follows from the UL 72 class.
7.8/ 10
The A4 option, with a construction described and UL 72 stated at 843 °C (1549 °F) for 30 minutes. Good box; only the class is left unwritten.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
Full A4 documents that should lie flat rather than be folded.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
6.2 L · UL 72 Class 350, 30 min at 843 °C (1549 °F) · fire and water resistant · key lock, 2 keys
A document box with a published fire rating: Amazon Basics states UL 72 Class 350 for 30 minutes at 843 °C (1549 °F), in a 6.2-liter fire and water resistant case with a mechanical key lock.
Best for: Passports, deeds and certificates — the papers that cannot be reprinted.
≈ $40
Double-walled · certified UL 72 fire protection, 30 min · key lock · bolts to the floor
A double-walled fire box with certified UL 72 fire protection for 30 minutes, from a safe manufacturer, and the only one in this hub that can be bolted to the floor.
Best for: Papers that need both fire protection and not to leave the house under somebody's arm.
≈ $425
Hard shell with fire-resistant lining · 13 compartments · 39 × 29 × 7.5 cm (15.4 × 11.4 × 3 in), expands to 10 cm (3.9 in) · shoulder strap
A hard-shell document case with a fire-resistant inner layer, thirteen compartments and a shoulder strap, expanding from 7.5 to 10 cm (3 to 3.9 in).
Best for: A household that keeps a lot of paper and wants it sorted, protected and portable.
