Master Lock

Protect your property, wherever you are

Master Lock No. 5400D Portable Lock Box

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.

  • 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

Master Lock No. 5401D Wall Mount Lock Box

The Master Lock No. 5401D Wall Mount Lock Box features a 3-1/4in (83mm) wide metal body for durability. The wall mount design offers permanent 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.

  • Wall mount design for permanent installation
  • Large internal cavity prevents jamming, even when holding multiple key
  • Set your own combination convenience for optimal security
  • Protective weather cover prevents freezing and jamming
  • Molded body and vinyl coated shackle prevent scratching
  • Internal Dimensions: 3-1/4in (83mm) H x 2-1/4in (57mm) W x 1in (25mm) D

No customer experience whatsoever

No customer experience whatsoever. Their padlocks are sold with a warranty, which is totally meaningless because the only way to make contact with them is via their online web form - I have done that 3 times over 3 weeks (uploading photos and including serial numbers as requested) and no one has contacted me. I telephoned their UK head office and there's no answer. Don't buy Master locks - buy Squires - they are really nice and helpful and immediately replaced a faulty padlock when I had to contact them.

Master combination lock M40DNUM

Bought the master combination lock today (model M40DNUM) and followed the instructions to successfully change the combination. Now it won’t open and the combination key will not turn. I know it’s the right combination as it’s one I’m familiar with. In addition, the dial is awful and the the numbers, especially the last one, are awkward to turn and line up. I have contacted the company to request a change to a regular key operated lock so will see what they say.