This SEBO Service Kit contains Ten Genuine SEBO High Filtration 3-Layer Paper Bags plus the Hospital-Grade Microfilter #6191AM and SEBO C Series Exhaust Microfilter #6033AM to keep your SEBO C Series canister performing well. Also included are ten green disks to seal the paper bag inlets before removing them for disposal.Also available are boxes of Genuine SEBO Paper Bags which contains ten high filtration 3-layer paper bags and sealing disks. SEBO recommends alternating between purchasing Boxes of Ten Paper Bags and purchasing the Service Kits so you can change the filters whenever you use twenty paper bags.