where can i find old G Series lock

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Question
Answer
Schlage G Series template locate here.
The G-Series lockset was discontinued in 1981, and all service parts for the G-Series lock were discontinued in 1985. 
 The current interconnect lock, S200 series (available in levers only), will not fit into the same door preparation.
No parts are compatible between the Falcon MA-Series and the obsolete Falcon M-Series.
The old D series lever lock was replaced by the ND lock in September 2003.
The new Falcon T-Series latch, introduced mid-June 2013, will work with all available T lock strike options.  No changes have been made to the strikes.