Locks for Sliding Doors with Narrow Frames.
■  Compact Size
At 35mm, the backset is small, so this lock can be used for sliding doors with narrow frames.
■  Also  available,  FN-6  Model  with  emergency opening device for bathroom doors and the FN-8 
Model  with  emergency  opening  device  with indicator.
■  Medium-size AH thumb-turn also available.