- Standard 70mm backset
- Stainless steel latch bolt
- Fire Rated
The Yale Classroom Key In Lever Lockset is part of the Yale Commercial Series of cylindrical locksets. In the classroom function, a key locks and unlocks the outside lever while the inside lever is always free. Its cylindrical chassis houses a PD type cylinder keyed to the Yale C4 profile, it is finished in Satin Chrome, and its handing is field changeable to suit left or right hand doors. For added security, Yale recommends using it with Yale Semi-Commercial Deadbolts.