CAS155 – 12 Hole – Hurricane Reverse Flow Duct Ball

12 Hole – Hurricane Reverse Flow Duct Ball. The Hurricane Reverse Flow Duct Ball provides a gentle cleaning technique can that be used on many types of duct work and in many situations. A Reverse Flow Duct Ball is ideal for air sweep after any duct brushing procedure. Use a 12- hole Hurricane Reverse Flow Duct Ball for increase air flow and performace compared to a 6-Hole duct ball.  Use a Hurricane Line (CAS148/CAS149) or compatible to interface this item with 1/4″ standard interchange airline fittings.