When choosing a deadbolt, have these minimum specifications:

• Minimum 3" interlocking bolts to hold the cylinder halves together.
• Tapered cylinder guard.
• Hardened steel bolt with a 1" throw and a saw-resistant feature.
• Bolt encased in a single piece housing.
• Bolt constructed so as to limit internal movement or "play" when bolt is fully extended.

Not all deadbolts are created equal. They appear similar on the exterior, but the internal components are critical to the overall integrity of the lock. Install a deadbolt that meets or exceeds ANSI grade 2.