BL5403SS. The Borg BL5403 Digital Lock comes standard with a 60mm backset lockcase and an optional free passage feature which can be disabled if not required. This non-handed medium-to-heavy duty digital lock with flat bar handle and 12 large indented buttons is suitable for use on internal and sheltered external applications. With a clutched keypad handle to protect against forced entry and lock damage, you can be sure the BL5403 can withstand plenty of use.. Medium to heavy duty digital lock. Optional free passage function. Euro-profile lockcase. 12 large indented buttons