To add such a range marker to our chart we will be using Javascript ChartModify event and the following code:
var vMarker = chart.rangeMarker(0);
vMarker.from("10000");
vMarker.to("40000");
vMarker.axis(chart.yAxis());
vMarker.fill("#d7fcda");
When you add it to your chart make sure to specify correct range that matches your data.
More info and examples from AnyChart manual:
http://playground.anychart.com/docs/7.13.0/samples/AGST_Range_Marker_04-plain