Can I change the backset on the Alfred DB series? Blair April 10, 2019 19:42 Yes, the DB series' backset can be changed between 2 3/8" (60mm) and 2 3/4" (70mm). Related articles Where can I order replacements for lost parts? Can I keep my existing mechanical deadbolt installation with my Alfred DB series lock? Comments 0 comments Please sign in to leave a comment.