Master Lock High Capacity Key Lockbox - Heavy-Duty Key Safe

Our review of the Master Lock High Capacity Key Lockbox finds it well suited for contractors, property managers and short-term rental hosts who need a simple, weather-resistant solution to share keys, fobs and access cards. The single biggest reason to buy is its combination of a solid metal body and an upgraded internal bin that keeps small items from jamming the mechanism, so access is reliable while still remaining portable and easy to move between sites.

Key Features

• Solid metal construction: The robust body resists tampering and manipulation, providing a secure shelter for keys and small access devices on sites or properties.
• Weather-resistant cover: A gray metal finish with a black weather cover and rubber bumper protects the dial and prevents surface damage during outdoor use.
• Larger internal capacity: The updated interior holds keys, fobs and access cards comfortably, with a built-in bin that prevents jamming when opening and closing.
• Easy-to-read dials: High contrast, widely spaced dials are easy to grip and operate, even with gloves, which speeds access for tradespeople.
• Removable shackle: The quick-release shackle makes installation and transport simple so the same lockbox can be moved between listings or job sites.

Who It's For

This lockbox is aimed at professionals who need dependable, portable key storage: contractors, maintenance crews, real estate agents, rental hosts and anyone managing multiple properties. The larger interior and built-in bin make it a practical choice for sites that use key cards or remote fobs in addition to traditional keys.

Those who require advanced electronic access control, remote code changes, or biometric entry should look elsewhere; this model is a mechanical combination lockbox designed for simplicity and durability rather than smart connectivity.

Pros & Cons

Pros

• Solid metal body and rubber bumper offer clear protection against tampering and surface damage.
• Built-in bin and larger capacity make storing fobs and cards reliable and reduce the chance of jamming.
• High-contrast, ergonomic dials are easy to read and operate, including when wearing gloves.
• Removable shackle and simple setup let you move the lockbox between properties quickly.

Cons

• Some users report mixed long-term durability in extreme weather, so it may require inspection over time.
• Mechanical combination entry can be slower than electronic smart locks for frequent remote changes.

Specifications

Our Verdict

The Master Lock High Capacity Key Lockbox is a practical, value-oriented choice for professionals and property managers who need a rugged, portable key safe without electronics. Its sturdy metal body, weather-resistant cover and built-in bin make it particularly useful for storing fobs and cards alongside keys, offering dependable security at a reasonable price.

Frequently Asked Questions

Can it hold key fobs and access cards?
Yes. The larger internal compartment and built-in bin are designed to accommodate keys, fobs and access cards without causing jams.

Is the lockbox weatherproof?
The unit has a weather-resistant cover and rubber bumper to protect the dial and body, but periodic checks are recommended in extreme conditions.

Can the shackle be removed for portability?
Yes. The removable shackle allows quick installation and easy transport between sites or properties.