Universal Hardware Universal Hardware Heavy Duty Commercial Classroom Lever Cylindrical Chassis ADA UL 3-Hr Fire ANSI Grade 2 Satin Chrome

The classroom function has a cylinder on the outside of the door so teachers cannot be locked out from the inside of the classroom. From the inside, the door is always unlocked so students can't get locked in. Constructed with a robust cylindrical locking mechanism, this lock is designed for heavy use doors. It is extremely robust mechanically and has a durable finish. This lock is also versatile and can fit doors from 1-3/8 in. to 2 in. T. It is UL listed for 3 hour doors. It meets or exceeds ANSI Grade 2 standards and is ADA compliant.