Amazon.com: WuYan Front & Back HEPA Filter Kit for Dyson DC19 DC20 DC21 DC29 Pre & Post upper & lower Motor Filters Vacuum Cleaner Replacement Part : Home & Kitchen
Amazon.com: HQRP 2-Pack Post-Motor Filter Pad compatible with Dyson DC04 DC05 DC08 DC08T DC08TW DC19 DC20 DC29 series Vacuum Cleaners, part 918952-01 Replacement : Home & Kitchen
Dyson DC19, DC20, DC21 Rinsable Pre Motor Filter - 917819-01