-Over the door knob design for portable installation
-Large internal cavity prevents jamming, even when holding multiple keys
-Set your own combination convenience for optimal security
-Set your own 4-digit combination for keyless convenience and increased security
-Protective weather cover prevents freezing and jamming
-Molded body and vinyl coated shackle prevent scratching
-Also available with personalized laser engraving - Learn more
-Internal Dimensions: 3-1/2in (89mm) H x 2-3/4in (70mm) W x 1in (25mm) D 

The Master Lock No. 5400D Portable Lock Box features a 3-1/4in (83mm) wide metal body for durability. The portable design offers removable “over the knob” installation. Set your own 4-digit combination for keyless convenience and increased security. The shutter door protects combination dials from weather, dirt and grime; and molded body and vinyl coated shackle prevent scratching. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.