Slats made of double sheet or aluminium       sandwich-type profile with a polystyrene       core.
      The lateral finish of the slats is rust       resistant.
      Storm resistant security hooks depending       on the lighting system for the door.
      Lower slat in aluminium extrusion with       60x10 steel strip reinforcement.
      Lateral rails with antifriction PVC joints.       (Reduced noise-level of the whole unit).
      Brush joints on lintel.
      Galvanised steel or aluminium guide rails.
      Winding axle of steel tube completely       sealed and painted with protection primer.

      Maximum flexion permissible in the tube: 1/500 width between supports, in accordance       with DIN 2458.
      Support bracket in galvanised steel, adjustable in height.
      Activated by motor reducer with spring compensation. 

      Built in accordance with EN/CE Safety Standards, and Quality control system in       accordance with DIN in ISO 9002.

      Wind resistance in accordance with DIN 1055, Part 4.
      Thermal insulation coefficient, value = 3.8 W/m2K, as per DIN 52612.