The Sargent 288215-ALP-US32D is a Grade 1 Heavy Duty Ligature Resistant Passage function Mortise Lock with ALP Push/Pull Trim and comes in US32D Satin Stainless Steel Finish. Sargent 8215-ALP-US32D has a 2-3/4" backset, for doors 1-3/4" to 1-7/8" thickness, and can be mounted horizontal (up or down) and vertical (sideways) orientations in the field.