The key box with code is constructed with high quality aluminum and zinc alloy, rust and corrosion resistant, according to the highest quality standards and strong enough to withstand hammering, sawing and pressure. Even if it is installed outdoors, Key Cabinets can withstand wind and sun, which ensures long-term use. Key box external dimensions: 7.5 x 3.5 x 9.5 cm / 2.95 x 1.38 x 3.74 inches, Internal dimensions: 7.0 x 2.9 x 8.3 /2.76 x 1.14 x 3.27; the wall mounted key box is mini size and compact design, it ensures large capacity but takes up less space for installation. Better meet your personalized needs. Using this 4-digit key safe that allows you or others to access the key at any time, which is very suitable for daily activities, friends, relatives, home services, emergency entry, pet sitters and real estate business, etc; Please record the password in your own way. Otherwise, the key safe can not be opened again if the code was forgotten. With the key box, you don't need to store your keys near the gate or under the items which are extremely dangerous for your home. Just open the padlock with the correct password in seconds and save time to find the keys in your pocket. The secure wall mounted key box has a simple and classic design, black and silver color for your reference, it will be a great gift for your family or friends. Note: The data are all measured manually, please allow 1-3cm error due to different light and display, there may be some color differences, please refer to the actual item received.