Features: • Body in high duty cast iron. • High effi ciency hardened steel mechanism. • Low opening force. • Two independent, non-critical closing speed valves. • Fully adjustable fi nal latch. • One body size. • Power sizes 1 – 2 – 3 according to EN / ANSI. • Available with hold open at 90°, 105° or non hold open. • Standard spindle height mm 21. Specifi c features: The high effi ciency (min. 70%) and the particular design of the mechanism enable the door to be opened with low and constant effort from 0° through 90° in compliance with ADA (USA) and CEN TR15894 requirements for interior and exterior doors. Power size 1 (for interior doors): max opening force through 90° less than 17 Nm. Power size 2 (for exterior doors): max opening force through 90° less than 29 Nm. Specifi cation text: Overhead concealed closer for centre hung doors, power sizes EN 3, with low opening force, ADA and CEN TR 15894 compliant, MAB 5600 series.