Damaged filters can reduce suction power of your vacuum cleaner and cause debris to exit back out of the cleaner rather than trapping the particles in place. This is the circular vacuum motor filter. If it is damaged or clogged, then replacing it with this new spare sponge filter would fix the suctioning problem with your vacuum cleaner. In order for the vacuum cleaner to work as well as possible, all filters should be replaced at least twice a year or when they are visibly dirty. Check compatibility before purchase.