A barrier constructed of spaced parallel components, typically steel, designed to regulate entry whereas permitting visibility and airflow, is usually known as a barred door. These buildings operate as a safety measure, offering a bodily impediment to unauthorized entry. An instance consists of the doorway to a holding cell inside a correctional facility.
The importance of such a barrier lies in its skill to discourage undesirable intrusion and preserve safety. The open design permits surveillance, enabling personnel to watch the realm behind the barrier with out obstruction. Traditionally, these limitations have been utilized in varied settings the place confinement and remark are obligatory, from prisons and animal enclosures to banks and retail areas securing valuables.