Zero In® Ultra Power Aluminium Chain Fly Curtain keeps flying insects out while allowing fresh air in. Hang rail and fixings included for quick installation. Quick-fit hanger for overnight removal. Chain link strands hang from a removable bracket, so the screen can be easily removed when not in use. Length of chain is adjustable; for required length simply unhook the links. Hygienic fly control for commercial kitchens, homes and businesses.