DB that must be it because its a comercial grade, i only got it becuase it was keyed on both sides so i could repin one and have the standard, yea there 4 holes milled into the left side of the plug which align with the first four pin holes, i must say for a Lowes buy, the schlage is pretty nice i think i might put these on my front door, might even throw in a medeco pin chamber.. might be over kill

but still there great locks for the buy pick wise i dont know how strong they are never tested one.
Andy
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