Product Specification: • STANDARD : EN ANSI/BHMA A156.5 • TESTING CYCLES : More than 100, 000 cycles • LOCK CASE : Galvanized steel lockcase with laminated haedened steel bolt • MATERIALS: 2851 / 2852 . Latch / Bolt – Laminated Harden Steel • Faceplate / Strike – Aluminum • Lock Case – Galvanized Steel • BACKSET : 25/29mm • DOOR THICKNESS : 35-55mm • FUNCTION : Entrance 2851 – For Swing Door 2852 – For Sliding Door • CYLINDER : Compatible with standard 29mm Mortise Cylinder or thumbturn. Cylinder and thumbturn supplied separately. • NO OF KEYS : 2pcs of Chrome Plated Keys.