Exterior doors are doors that are on the exterior walls of the building. Not all of these doors allow access to the building’s interior. Many are to closets or rooms that are isolated and have no other access to other interior spaces.
A perimeter door, however, is a door that allows access to rooms with other exterior doors or allows access to main hallways and other interior spaces. In certain rare situations, a perimeter door could be an internal door that provides access to secure space for students and faculty.
For example, an exterior door that doesn’t allow entry anywhere but that classroom (and/or storage space), would be an exterior door. However, a door that allows entry into a classroom that also has an interior door with entry to more classrooms, buildings, etc., would be a perimeter door.
For security reasons, Public Safety does not publish details about security criteria or access control installation information.