Designed for facilities requiring extended product life cycles, the extra heavy-duty mortise lever lock from SCHLAGE® is ideally suited for educational, healthcare, and government buildings. Concealed hardened steel roller pin is resistant to cutting or kicking attacks. 6-pin solid brass cylinder with C123 keyway, keyed different. Includes 2 nickel silver keys per lock. 3/4" stainless steel throw latchbolt. Equipped with a conventional cylinder and Rose trim. Sparta style for classroom doors. Grade 1.