ND93PD: Vestibule LockCATALOG ND93PD Vestibule Lock Latch retracted by key from outside when outside lever is disengaged by key in inside lever. Inside lever is always unlocked. Available Styles: RHO, SPA Available Finishes: 613, 626 Standard Features Certification: Exceeds ANSI A156. 2, Series 4000, Grade 1, UL Listed for 3 hour fire door. Meets A117. I Features: Tested to exceed three million cycles Latch: 1 1 8 x 2 1 4, Square corner faceplate, 1 housing diameter, 1 2