Side-folding security doors and grilles are versatile access-control systems designed for large openings, storefronts, service areas, and spaces with straight, angled, or curved layouts. Suspended from an overhead track, the connected sections glide smoothly across the opening and fold compactly into a side storage pocket when access is required. When closed, they create a durable protective barrier while maintaining a clean, professional appearance.
Available in open grille, perforated, and more private curtain configurations, side-folding systems can be customized to meet each facility’s security, visibility, airflow, and architectural requirements. Options may include custom finishes, locking hardware, emergency egress features, multiple stacking locations, and specialized track configurations. PSI provides professional product selection, sales, installation, inspection, preventive maintenance, adjustment, repair, and replacement-component support.