Pack Of 4 Replacement Filters - Compatible With Black+decker Powerseries Extreme Cordless Stick Vacuum (model # Bsv2020) f26 Filter-Vacuum replacement filter, compatible with the Black+Decker POWERSERIES Extreme Cordless Stick Vacuum. Model BSV2020Value Pack: This pack contains 4 replacement filters in totalCompatibility : Compatible with the Black+Decker POWERSERIES Extreme cordless vacuum cleaner. Model BSV2020 and BSV2020GEasy to fit Install: It's easy to install a replacement filter for your vacuum cleaner. It is recommended to replace the filter every 2-3 months to improve suction and performance, as this can prolong the life of the vacuum cleaner.High quality; : the filter uses the most advanced technology to bring you a great alternative to the filter