Barska 4 Digit Dial Key lock box is a heavy-duty storage solution designed to securely hold up to five standard 2-inch house keys. It features a portable "over-the-knob" design with a vinyl-coated shackle to prevent door scratching and a shutter door to protect dials from the elements. 

Key Specifications

• External Dimensions: 7" H x 3.5" W x 1.7" D.
• Internal Dimensions: 2" H x 2.3" W x 1.2" D (shaped like an "L" to accommodate the locking mechanism).
• Shackle Dimensions: 1.4" length, 1.88" width, and 0.4" diameter.
• Weight: Roughly 1 pound (562 grams).

Performance and Security

• Access Control: Features a 4-digit resettable combination that offers 10,000 possible codes.
• Weather Resistance: Constructed with a durable metal body and a protective shutter door to prevent freezing and jamming in outdoor conditions.
• Expert Insight: While highly rated for general use, security experts note that these mechanical boxes can potentially be decoded with specialized tools, though newer versions include a metal lip to make this more difficult.
• User Feedback: Very easy to program and reliable for real estate and renovation needs, though some users mention they compare the internal space with similar to Master Lock 5400EC due to the lock mechanism design make this lock a great value of replacement.