The Marks USA 5SS19LF LH Commercial Mortise Lock Grade 1 32D is a high-quality, locking mechanism designed for commercial and classroom settings. Made of durable stainless steel with a satin finish, this mortise lock adds security to any door while maintaining a sleek and modern appearance. With its reliable construction and Grade 1 rating, this lock is a trusted choice for businesses and institutions seeking robust door hardware. Shelf A1