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“ difference between nd series and al series ”

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What is the difference between D and ND series?
The D series is knob trim and the ND series is lever trim.
Is there a tool to drill the thru bolt holes on cylindrical locks?
Order the M204-198 thru-bolt jig, see Figure 1. Figure 1: M204-198 thru bolt jig The 40-080 was the old Schlage jig. The 030736-000-70 was the old Falcon jig.  When the jig changed to...
What backsets are available on Schlage and Falcon locks?
SCHLAGE locks are available with the following backsets: Lock Series Lock Type                 ...
What is the difference between the standard lever inserts for the pre-2002 AL and the old D Lever?
The old D-Series Lever used a standard lever insert similar to the pre-2002 AL-Series standard lever insert.  The old D Lever insert was smaller than the AL and the two were not comp...
What grade is the AL lock?
The AL lock is a Grade 2 lock ANSI/BHMA Certified A156.2-2003, Series 4000, Grade 2, UL Listed for 3-hour fire door.
What height should a lock or deadbolt be installed?
According to ANSI specifications for cylindrical or mortise locks: The lock strike centerline should be 40 5/16" from the bottom of the frame with the lock in relation to the strike.&...