Closing force sizes EN 1/2/3 according to EN 1154 Hold open at 90° For single action doors and/or fan and up to 100kg Opening up to 180° in both directions with hydraulic control from approx 135°. Free rotation from 135° to 180°. Hold open at 90°, 105° or at any angle between 135° and 180° Closing speed and latching action adjustable by valve higher thermodynamic independent and to ensure consistent performance under varying conditions of temperature Coverplate Finish: Satin Stainless Steel, Polished Stainless Steel, Polished Brass