It is resistant to temperatures of up to 860 °C for at least 30 minutes, ensuring that your valuables are safely stored in case of a fire. Water cannot damage the document box either, as it remains waterproof even when fully submerged. The document box has a volume of 17.6 liters, accommodating documents up to A4 size. These can be organized in a hanging file included in the package. It is securely closed with a clamp lock, which comes with two keys for locking the box. Please ensure adequate ventilation by regularly opening the box to prevent increased humidity in the airtight interior.