Folding Closures allow you to have security concertina doors in any shape and any length. These commercial folding doors have no floor track, eliminating any trip hazards. Great for protecting shop fronts against theft, for businesses that need airflow while being secure and as an add-on level of after-hours security for your business. The S04 Mobile Concertina Screen Trellis system is ideal for keeping your business safe because of its strength and functionality. The S06 Fixed Concertina Security Trellis Door is heavy duty and fully-framed for extra protection. It takes only seconds to close and lock. Great for protecting banks, shop fronts, hotel bars, closed warehouse areas, banks, government buildings, hospitals, clubs, sports arenas, airports, railway stations, heritage buildings etc.