extended throw nd

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Schlage ND-Series tailpieces for extended doors are available by only two means, but are not available to order separately. If an extended tailpiece is needed, then a complete lock will need to ...
ND locks can be extended up to 6" Extended Outside.  
The AD and CO locks both have a 3 hour fire door rating. Please see URL for more info.  UL Fire Rating List
After installing a classroom deadbolt, there is potential for the thumbturn to project the bolt only, get stuck in one position, or move both directions but not move the bolt.  These are caused fro...
Only the chassis components are modified for thicker door applications, the lever and spindle assemblies remain intact.  The following parts may be modified depending on the function of the lock ...