DC 450


  • Floor spring with fixed closing force for very thin slabs
  • Certified in compliance with EN 1154, size 3 or 4
  • Suitable for fire and smoke protection doors
  • For double and single action doors up to 120 kg


  • Same dimensions for 2 bodies according to fix size EN3, EN4
  • Hydraulic control over 130° in both door swing directions
  • Adjustable door speed and latching speed from top regulating valves
  • Cast iron body
  • Adjustments in all directions within the cement box
  • Cement box hot zinc plated and only 40 mm high
  • Cover plates and eyelets made in polished or satin stainless steel
  • Interchangeable spindle from 0 + 30 mm
  • Available with hold-open at 90°, 105° and without hold-open