Can you add a double cylinder to an existing 99 rim device?

The 98/99 rim device can be converted to double cylinder 98-2 or 99-2.

  • Double cylinder features an inside key cylinder which locks or unlocks the outside trim (Classroom Function) and an outside cylinder which retracts the latch bolt only (Night Latch Function) when outside trim is locked.

     

    ordering from May 2023  device series/function/Conversion kit /finish / handing
     


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