School Safe Open IN Hinges on Left

School Safe is an 'anti-latch' device. It is not a lock. Its function is not to replace or alter the lock on the door but to enhance its functionality by allowing the door to remained locked throughout the day but still be used to go in and out freely. School Safe prevents the door from latching by keeping it slightly ajar. The School Safe lever extends about 3/8 of an inch out from the jamb or door, thereby preventing the strike from entering into the strike plate and latching. So the door, even though locked, will never latch until the School Safe lever is flipped thereby allowing the door to close all the way. Since it was already locked, the classroom is immediately secured without having to use keys, open the door, or venture into the hallway.