10 Best Key Lock Boxes 2026 in the United States

The Master Lock Key Lock Box 5400EC5 is designed for secure outdoor storage of up to five standard house keys, making it a solid choice for realtors, landlords, and property managers who need quick yet safe access to properties. Its metal body combined with a vinyl-coated shackle offers good durability and helps prevent damage or scratching to door hardware. The four-digit combination lock lets you set and reset your own code, providing keyless convenience without the worry of lost keys or batteries. This lock box is weather-resistant thanks to a protective shutter covering the combination dials, which is important for outdoor use.

At about 6¼ inches tall and 3¼ inches wide, it’s compact enough to be portable but still large enough to hold multiple keys securely. The shackle fits most common door knob styles, allowing easy mounting on various doors or fixtures. One drawback is that it only holds up to five keys, which might be limiting if you have many keys to secure. Also, while it’s built for outdoor use, extreme weather or tampering could still pose challenges, so placement matters.

The package includes five lock boxes, which is great for managing several properties or sharing among a team. The product comes with a limited lifetime warranty, backing its reliability. If you want a straightforward, robust lock box with a customizable code system and reasonable capacity, this Master Lock is a dependable option.