2 in 1 Filter Replacement Compatible with Dyson Air Purifier HP09 TP09 HP07 TP07 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.
