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What parts are modified on Schlage mortise locks for thicker doors?

The L9000 lock can be ordered for doors greater than 1 3/4" thick.  The allowable door thickness is dependent on the L lock function and how the lock is extended.  
 
All locks for extended doors must be ordered specifying thickness and how extended (EE, EO, EI, ED).   


If attempting in-field modification of L9000 for a thicker door, here are the parts that may need to be modified:   

  • Mounting posts (ferrules)
  • Spindles
  • Cylinders
  • Thumbturn
  • Strike
  • Escutcheon thru-bolts
  • Indicators

NOTE: The lock trim, the lock function, the door handing, and how the door is extended (inside, outside, equally, or different) will all impact the above items.  Some parts may not be available sold separately.   

See the Pricebook for the specific part numbers.




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