Security access doors are designed for drywall, masonry or concrete construction and provide the security required in today's schools, hospitals, hotels, housing projects, prisons, and correctional institutions. Security access doors are used in medium to high security areas. This type of door should be used as a safety measure for protecting against dangerous people, or to prevent unwanted intrusions. Usually security access doors have different locking options to provide additional security. They are most commonly made with either a 10 or 12 gage plate to ensure strength.