The Master Lock No. 5422D Portable Push Button Lock Box features a 3-1/8in (79mm) wide metal body for durability. The shackle design offers over the door mounting for convenience. 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.

• Over the door knob design for portable installation.
• Convenient push button locking mechanism in familiar alpha / numeric telephone keypad format.
• Set your own combination using up to 12 letters, numbers, or both.
• Large buttons for ease of use, even in low light conditions.
• Large internal cavity and removable key hook prevents jamming.
• Protective weather cover prevents freezing and jamming.
• Molded body and vinyl coated shackle prevent scratching.
• Internal Dimensions: 3-1/2in (89mm) H x 2-1/4in (57mm) W x 1in (25mm) D.