???Applied Vacuum Cleaner Model??? This Odor Neutralizer Cartridges are Immaculate Replacement for Shark IZ400UKT, IZ400UK, IZ420UKT, NZ860UKT, NZ860UK, AZ913UK, AZ913UKT, HZ3000UKT Vacuum Cleaner. (Please Check your Vacuum Cleaner model before purchasing). ???Easy To Install??? Our odor neutralizer cartridges for Shark vacuum cleaner are easy to install, only need to align the arrows on the cartridge with the arrows on the nozzleinsert the cartridge , and rotate the intensity dial to your preference. ???Value Pack???Each package includes 6 replacement cartridges???LavenderX2+Blue CampanulaX2+LemonX2???, so you can keep your vacuum running for part 1541FC3000. ???Fresh Scent??? Use Odor Neutralizer Technology,Protects against bad odours inside the vacuum cleaner,keep your home smelling fresh. ???Change time???Please replace cartridges every 6 months to ensure optimal effectiveness. ???Top Service???We are committed to providing you with a 100% satisfactory service. You can contact us at any time if you have any questions, and we will give you a satisfactory answer within 24 hours.