21ft .. great pole, i work with it all day, i use a vikan 12" and its superb,
gets 99..9% of all windows over conservatories, and whips straight down to 5ft , so i do all downstairs too,
and it fits perfect in my van....
I also have tried it with a lightweight bentley brush but it was far too light with that,
i find a bit of weight on the brush helps, regarding contact on glass.