This clever piece of kit saved my bacon.  With days to  go  before a new arteficial lawn  was to  go down I realised the run off from the shed roof would ruin it.  Having bought the 12ft Hall Shed gutter I then bought a barrel butt for use with a  rain diverter, only to  find the only mini gutter diverter was from  flowplast, and used a slightly different downpipe size.  Luckily the gutter size was the same. So  the whole downpipe system  from  top to  botton is from  flowplast.  A very neat solution

John Russell, Wirral