Complete junk! The filter fits too loosely in the holder! A BIG problem as the air has to go THROUGH the filter and the air always takes the path of least resistance, turning your Shark into a dust spreader! OEM filters must be INSERTED into the cartridge to show the rubber seal is fully seated in the cartridge and pushing all air through the filter mesh. This filter is a cheap fake with the wrong dimensions. DO NOT BUY! There are other suppliers that fit MUCH better, although some of them require the o-ring at the top of the filter to be widened to ensure a tighter fit. However, they are completely useless!