The B600 (standard cylinder only) can be be specified for 1 3/8" thin doors and the appropriate parts will be supplied. Interchangeable cores are not available for 1 3/8" thin doors.
The outside housing, B600-089, can be ordered to retrofit an existing standard cylinder B600.
Description: 1 1/8” Collar (trim ring) for 1 3/8” – 1 5/8” door
The B series accepts 6 or 7 pin small format cores when specifying with the "BD" cylinder suffix (less small format interchangeable core). The tailpiece shown below is used for bo...