&lt;p&gt;Operative office chair, CATAS UNI EN 1335 certified.&lt;br&gt; Office chairs with this kind of certication guarantee to carry up to 120 kg of load; furthermore for their technical and structural features, they assure an ergonomic seat.&lt;br&gt;&lt;br&gt;The operator chair has 5-star &lt;strong&gt;base&lt;/strong&gt; in black nylon and black &lt;strong&gt;wheels&lt;/strong&gt;. Optional extra include the base in chromed metal. The wheels can be with rubber, softer and more suitable for delicate floors. &lt;br&gt;The chair can be without or with &lt;strong&gt;armrests&lt;/strong&gt;, available in many models, both fixed and adjustable.&lt;br&gt;&lt;br&gt; Plywood inner seat; &lt;strong&gt;seat and backrest&lt;/strong&gt; are padded and can be covered with different kind of fabric, also fire retardant, or with imitation leather, in several colours. &lt;br&gt;&lt;br&gt;This chair is adjustable in height by means of a gas lift mechanism. The seat is adjustable through two alternative &lt;strong&gt;systems&lt;/strong&gt;:&lt;/p&gt;  &lt;ul&gt;  &lt;li&gt;AS - Asyncro, with 3 levers that allow adjustment of seat and back independently;&lt;/li&gt;  &lt;li&gt;SM - Syncro multiblock, which allows adjusting the inclination of the seat and back in a synchronized manner; the seat can oscillate and be locked in 5 different positions.&lt;/li&gt;  &lt;/ul&gt;  &lt;p&gt;Both the mechanisms have the &lt;strong&gt;anti-shock&lt;/strong&gt; system, to prevent the abrupt return of the backrest, and the &lt;strong&gt;backrest height adjustment&lt;/strong&gt; &quot;up &amp; down&quot; jerky, operable accompanying the backrest upwards.&lt;br&gt;&lt;br&gt;Upon request, the chair with Syncro system multiblock can be integrated with the shifter of the seat, which adjusts the seat depth.&lt;/p&gt;                            	    	                      	    	                      																				    	                      							    	                      				    	                      	    	                      	    	                                                                                                       &lt;p&gt;&lt;/p&gt;&lt;div class=&quot;sizes-and-weight-desc&quot;&gt;&lt;b&gt;Dimensions and weight&lt;/b&gt;&lt;table class=&quot;tDim cUfficio01&quot;&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td class=&quot;tDim1&quot;&gt;&lt;span&gt;47 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim2&quot;&gt;&lt;span&gt;51 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim3&quot;&gt;&lt;span&gt;40-53.5 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim4&quot;&gt;&lt;span&gt;104-119 cm&lt;/span&gt;&lt;/td&gt;&lt;td class=&quot;tDim7&quot;&gt;&lt;span itemprop=&quot;weight&quot; itemscope=&quot;&quot; itemtype=&quot;http://schema.org/QuantitativeValue&quot;&gt;&lt;span itemprop=&quot;value&quot;&gt;15.1&lt;/span&gt; &lt;span itemprop=&quot;unitCode&quot;&gt;kg&lt;/span&gt;&lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/div&gt;