works very well with our large wood-burning stove.
We use the cage to stop any large pieces plugging the pipe.
We use the vac every 2 or 3 days and can do 2 times before emptying.
Suggest leave tube connected until its outside and to stop any ash falling our on completing a vac cover tube end with plastic cap - photo. ( took a time to find right size )
Would be a good idea to have in original supply
DEREK