Patona's replacement filter is particularly suitable for the Dyson Pure Cool or Hot+Cool Link Air purifier and ranges for up to 4380 hours of air filtering / ideal for allergy sufferers and asthmatics You acquire a branded product of one of the leading third-party manufacturers (no original). The Patona Hepa Filter for Dyson Pure Cool Link DP01 and DP03 reduces pollen and dust as well as viruses and bacteria. He also reduces unpleasant smells. Compatible models: Dyson Pure Cool Link DP01 (305214-01, 308404-01, 30803-01, 308034-01, 309423-01) Pure Cool Link DP03 Pure Hot+Cool Link HP01 (306982-01, 311383-01, 310105-01, 250976-01) Pure Hot+Cool Link HP02 (305570-01, 305571-01, 308396-01, 308395-01) Pure Hot+Cool Link HP03 and Building models replaced: 967449-04 968101-04