The Master Lock 5423D wall mount push button lock box features a 3-1/8 in. (79 mm) wide metal body for durability. The wall mount design offers permanent installation. Set your own 4 character combination for keyless convenience and increased security. The protective weather cover prevents freezing and jamming; and molded bumper and vinyl coated shackle prevent scratching. The limited lifetime warranty provides peace of mind from a brand you can trust. Wall mount lock box for permanent installation Resettable push button combination (up to 12 characters) Ideal for house keys and most key fobs Large buttons for ease of use, even in low light conditions 3.13-In (79mm) wide durable metal construction Large internal cavity and removable key hook prevents jamming Molded bumper and vinyl coated shackle prevents scratches to your door Protective weather cover prevents freezing and jamming Color/Finish Family: Black Type: Lock box Height (Inches): 4.61 Interior Height (Inches): 3.5 Interior Length (Inches): 1 Interior Width (Inches): 2.25 Length (Inches): 4.625 Weight (lbs.): 2 Width (Inches): 3.125 Fireproof: No Hub Required: No Lighted Keypad: No Lock Type: Push button Material: Metal Mounting Type: Wall-mount Package Contents: Lock Box Test/Reset Button: Yes Voice Controlled: No Warranty: Limited lifetime Waterproof: No App Compatibility: No Bluetooth Compatibility: No Smart Compatible: No Wi-Fi Compatibility: No Works with Amazon Alexa: No Works with Android: No Works with Apple HomeKit: No Works with iOS: No Works with SmartThings: No Works with the Google Assistant: No CA Residents: Prop 65 Warning(s): Yes UNSPSC: 46171500