Mechanical, Lever, Mortise, Lockset Function Passage, Lockset Grade 1, Style Boston, Lockset Finish Satin Stainless Steel, Key Type Not Keyed, Standards A156.13, A250.13, ANSI A117.1, ANSI F01, ASTM E1886, E330, ADA Compliant Yes, Lockset Fire Rating 3 hr, Backset 2 3/4 in, Ligature Resistant No, Features J Escutcheon Narrow, For Use With Wood and Steel Doors, Includes Hardware, Item Mortise Lockset, Location Type Commercial, Lockset Performance Strength Extra Heavy Duty, Number of Keys 0