Protect your valuables from damage. This large 10-liter document box from Master Lock offers ETL and UL certified fire resistance for up to half an hour for CDs, DVDs, USB drives, and flash drives at temperatures up to 843 °C. Master Lock's patented insulation is made of concrete, which may result in harmless concrete dust due to shipping. Its dimensions allow for the storage of A4 papers, so you can protect important documents. The security solution can be programmed with a combination code of four to six digits, providing multiple possible combinations. By simply resetting the numeric password, different users can gain access after each use. Thanks to its waterproof seal, valuables are protected from water damage when submerged or when the product safely floats on the surface. This black document box measures 19.3 cm H x 41.9 cm W x 37.5 cm D (external dimensions). In the unfortunate event of a fire, your product is covered by a lifetime replacement guarantee after the fire, meaning that the American security specialist will replace your damaged product on a comparable basis. However, if your product is defective due to faulty materials or workmanship, a 2-year warranty is provided.