The single flocked brush like I said earlier will allow you to clean all Windows without the need to change brush for thick leads,I used it the other day for every job that I normally use a mono for rinsing on,I was a running and tilting on the way down to rinse and it was just as quick with a flow of water,around 70 on the controller which is what I have it on daily I have no need to lift he brush if there very dirty I just tilt on the way down. Very little effort in scrubbing needed with this brush on the glass,ideal also for Conny roofs as well especially when they are free for the customer lol they love me 😂😂