Double-walled construction The flush-mounted, impact-resistant access cover is impervious to hammering, sawing or disassembly. Safely store the keys to your kingdom in our key safe Key Guarantee We offer 45-day unconditional money back and 12-month w orry- free service. . 4-digit combination dials Nothing is more secure than a four-digit password key lock box. The attached hinged lid allows one-handed operation. Clear instructions guide you to reset your access code at any time. Please note that once the password is reset, it is better to take a photo save or there will be no way to open it again . Rust resistant steel Interior dimensions: 92x75x26mm. It is suitable for outdoor and indoor use. Your key safe is fitted with a weather resistant sliding door cover to protect the combination dials from further damage. . Large and secure storage Suitable for up to 5 house keys or 3 large keys. Prevent lockouts and provide access to your property for caregivers, service technicians and pet sitters when you're at work or on vacation. Perfect solution for storing keys for Airbnb rentals. . Install the key safe with its removable hook that can only be opened when you open the key safe. Open the box inside, there will be 4 holes on the back of the box. Hold the box against the wall and mark the position of the holes with a pencil. Using a drill with a masonry bit, drill holes in the wall. Place the plastic railing anchors into the wall. Place the box against the wall then screw in the screws provided. .