Alumatec’s side-folding security grilles are an excellent choice for securing any type of storefront. Side-folding grilles require no headroom, have adjustable roller stems, openings can be curved and no floor track is required. Alumatec’s open pattern grille is one of the most durable, and strongest open pattern curtains in the industry. Manufactured using a double action hinge system, and sleeved rods, this grille will hold up to the rigors of daily use.