HQRP Washable Pre-Motor HEPA Filter for Vax Power 6 Series C89-P6-B Vacuum Cleaners Plus Coaster HQRP&reg; Washable Pre-Motor Filter, Type B; Replacement Filter Pad plus HQRP&reg; Coaster; This HEPA Filter is H13 filtration class and retains 99.99% of particles down to 0.3 micron; Filter Diameter - 148mm! PLEASE, make sure that your filter has the same diameter before making a purchase! This filter may trap very small dust particles and tobacco smoke so it is better for homes with allergy sufferers; Compatible with Original filter.