&lt;p&gt;Simple and versatile operative office chair, suitable for furnishing the office area.&lt;/p&gt;  &lt;p&gt;The &lt;strong&gt;pyramidal base&lt;/strong&gt; ∅640 mm is made of&lt;strong&gt; chromed steel &lt;/strong&gt;and it is provided with &lt;strong&gt;black wheels&lt;/strong&gt; ∅50 mm. Optional extra include the &lt;strong&gt;rubber wheels&lt;/strong&gt; softer and more suitable for delicate floors.&lt;/p&gt;  &lt;p&gt;The seat has a inner structure in beech plywood, whereas the outer part is in white polypropylene as the backrest. Seat and backrest are padded in expanded polyurethane and covered with different kind of fabric, also fire retardant, or with imitation leather, in several colours.&lt;/p&gt;  &lt;p&gt;The ML342 chair is adjustable in height by means of a gas lift mechanism. The&lt;strong&gt; Asyncro mechanism&lt;/strong&gt;, with 3 levers allows adjustment of seat and back independently. &lt;br&gt;The backrest height adjustment is made by activating a simple hand grip.&lt;/p&gt;  &lt;p&gt;The standard version is proposed without armrests but is also available the version with adjustable armrests in white colour.&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;