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Latch by lever either side except when outside lever is locked from inside or outside by key . When locked, exterior key will retract latchbolt . Outside key locks or unlocks exterior lever . Inside key is single acting in one direction and will lock exterior lever only; will not unlock exterior lever . Auxiliary latch deadlocks latch . Inside always free for egress
5 series "GJ" function double cylinder lock . Lock handing completely reversible without opening lock case .