The Y latches listed below are adjustable to fit either a 2 3/8" or 2 3/4" backset.
LATCHES WITH LOCKS
Description
Backset
Specify
Square corner, 1-1/8" x 2-1/4", standard
2...
The latches for the Y and F lock are not interchangeable as the hole sizes are different. Substituting any latch voids your UL and product warranty.
A and AL product: Must use the 2 3/8" backset with the 41-005 extension link
D Knob and ND product: Must use the 2 3/4" backset with the 43-005 extension link
The default backset is 2 3/4" and the latch faceplate dimensions are 1 1/8" x 2 1/4".
The latch supplied is the 13-047 deadlatch and 13-048 springlatch.