Deadlatch, Exit Device, Latch Bolt, Medium Duty Performance, Grade 1, Bronze Finish, Series 451, Fits Stile Width 3 1/2 in, For Door Thickness 1 3/4 in, Door Handing Left Hand Reversible, Not ADA Compliant, No, Standards ANSI/BHMA 156.3, Grade 1 Cycle Tested