Most locks will have a standard door range they will install on, but occasionally customers will want to use them on thicker doors. In order to do so, the extended door thickness needs to be determined (See extended door definitions here).
Once this is determined, include the definition when specifying the lock.
Example: ND53PD RHO 626 2-3/4" E.O. (In this case, the lock is being specified for a 2-3/4" Extended outside door).
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