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• Defiant Electronic Deadbolt User Manual

What exactly is an ANSI grade? The American National Standards Institute (ANSI) is a private nonprofit that administers voluntary performance standards for builder's hardware. The purpose of ANSI grades is to help identify the quality and durability of locksets through a series of operational and security tests.

Defiant Electronic Deadbolt User Manual

ANSI grades reflect three levels of security and durability: Grade 1 certification – Highest Grade Security The strongest grade ANSI recognizes for any residential or commercial product. Grade 2 certification – Higher Residential Security Designed to offer excellent security and durability. Used mostly for residential applications and some light commercial applications. Grade 3 certification – Basic Residential Security The lowest grade provided by ANSI, and the minimal acceptable quality for residential door locks.