Dormakaba C877-D-LRC-613 Lever Locksets; Type: Classroom Intruder; Key Type: Keyed Different; Strike Type: ANSI 4-7/8; Finish/Coating: Oil Rubbed Bronze; Material: Steel; Material: Steel; Door Thickness: 1-3/4"2-1/4" ; Backset: 2.75; Lockset Grade: G