We don't just make the grade. We break it. All Schlage Grade 1 deadbolts endure 300,000 cylcles of testing in our state-of--the-art testing facility, which is 50,000 more than required for Grade 1 certification.
We don't just make the grade. We break it. All Schlage Grade 1 deadbolts endure 300,000 cylcles of testing in our state-of--the-art testing facility, which is 50,000 more than required for Grade 1 certification.
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