Security vestibule definition
Security vestibule is means a defined space that provides security by using two or more doors, with each door able to operate independently, and that permits an officer to observe those who pass through the space.
Security vestibule is means a defined space that provides security by using two or more doors,
Security vestibule means a compartment provided with two or more doors where the intended purpose is to prevent continuous and unobstructed passage by allowing the release of only one door at a time.