Rotary Brush - 350mm/200mm HARD WHITE
 
This specialist rotary duct brush has been designed for rotary cleaning square ducts. It has a central inner brush and an outer brush and it is made of a very fine specialist perlon bristle. The inner brush has been designed to stay centralised in the duct, whilst the outer gets into the square corners. 
 
It comes together with a fixed adaptor, so can be spun in both directions.
 
There are three sizes of large rotary brushes, 350mm, 420mm and the 600mm.