2 in 1 Filter Replacement Compatible with Dyson Air Purifier HP04 TP04 DP04 PH04 HP09 TP09 HP07 TP07 PH03 PH01 Cost saving: the package contains a group of replacement filters. It is recommended to replace the filter every 6-8 months. Please note: our filter is made of high quality 1:1 material and uses true level H13 HEPA filtering, which can filter tiny particles finer than dust, while other inferior filters can only filter dirt and hair.
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