Schlage ND70JD RHO 626 FSIC Series ND Grade 1 Cylindrical Lock, Classroom Function, Full Size Interchangeable Core, Rhodes Design, Satin Chrome Finish

UL Listed for 3-hour fire door door range 1-5/8" - 2-1/8" 1/2" throw Tested to at least 3 times the 1,000,000-cycle ANSI Grade 1 requirement That means you get premium durability and performance in a lock that's also easy to service and maintain.