Here are the standard door ranges for the B500 and B600 series with IC core:
The Schlage B600 series with IC core cannot be ordered for 1 3/8" thick door. It also cannot be field adapted for a 1 3/8" thick door.
The Schlage B500 series with IC cores can be ordered for 1 3/8" thick door by specifying DT 1 3/8".
To adapt the Schlage B500 deadbolts with IC core for a 1 3/8" door thickness in the field, use the 36-071 collar kit (sold separately).
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