The Hurricane catalyst or splash-guard is specially designed to fit the Hurricane down pipe and bowls and serves to catch the ash and embers which fall from the bowl. This prevents them from clogging the downpipe and entering the bong itself. The front side hit hole on the bong should only be opened after these embers have fallen into the splash guard - which should be a third filled with warm water, kept damp and occasionally emptied. This particular one is one of their WAM Artist versions which consists of sandblasted glass and then a female silhouette logo on the side.