<param name="diameter" type="float" precision="2" max="9999" gui-text="diameter" gui-description="diameter of the fan hole">80</param>
<param name="mounting_holes" type="float" precision="2" max="9999" gui-text="mounting_holes" gui-description="diameter of the fan mounting holes">3</param>
<param name="mounting_holes_inset" type="float" precision="2" max="9999" gui-text="mounting_holes_inset" gui-description="distance of the fan mounting holes from the outside">5</param>
<param name="arms" type="int" max="9999" gui-text="arms" gui-description="number of arms">10</param>
<param name="inner_disc" type="float" precision="2" max="9999" gui-text="inner_disc" gui-description="relative size of the inner disc">0.2</param>
<param name="style" type="optiongroup" appearance="combo" gui-text="style" gui-description="Style of the fan hole">
<param name="thickness" type="float" precision="2" max="9999" gui-text="thickness" gui-description="thickness of the material (in mm) [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#thickness)">3.0</param>
<param name="tabs" type="float" precision="2" max="9999" gui-text="tabs" gui-description="width of tabs holding the parts in place (in mm)(not supported everywhere) [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#tabs)">0.0</param>
<param name="debug" type="bool" gui-text="debug" gui-description="print surrounding boxes for some structures [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#debug)">false</param>
<param name="reference" type="float" precision="2" max="9999" gui-text="reference" gui-description="print reference rectangle with given length (in mm)(zero to disable) [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#reference)">100</param>
<param name="inner_corners" type="optiongroup" appearance="combo" gui-text="inner_corners" gui-description="style for inner corners [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#inner-corners)">
<option value="loop">loop</option>
<option value="corner">corner</option>
<option value="backarc">backarc</option>
</param>
<param name="burn" type="float" precision="2" max="9999" gui-text="burn" gui-description="burn correction (in mm)(bigger values for tighter fit) [🛈](https://florianfesti.github.io/boxes/html/usermanual.html#burn)">0.1</param>