ASSA ABLOY DC 420 ASSA ABLOY DC 420 Floor spring with fixed closing force for thin slabs Certified in compliance with EN 1154, size 2-4, cycle test over 1,000,000 cycles Suitable for fire and smoke protection doors For double and single action door up to 100kg Characteristics Same dimensions for 3 bodies according to fix size EN2, EN3, EN4 Hydraulic control over 175° 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 in hot zinc plated Cover plates and eyelets made in polished or satin stainless steel and polished brass Interchangeable spindle from 0 to +30mm Available with hold-opening angle 90°, 105° and without hold-open For thin slabs Contact Us ASSA ABLOY DC475 ASSA ABLOY DC460 ASSA ABLOY DC450