A barrier constructed of spaced parallel components, typically metallic, designed to manage entry whereas permitting visibility and airflow, is often known as a barred door. These constructions perform 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 means to discourage undesirable intrusion and keep safety. The open design permits surveillance, enabling personnel to observe the world behind the barrier with out obstruction. Traditionally, these obstacles have been utilized in numerous settings the place confinement and commentary are mandatory, from prisons and animal enclosures to banks and retail areas securing valuables.