General description Compatible with Dyson Pure Cool DP04 Air Purifier and Fan, Pure Hot + Cool HP04 Air Purifier, and Pure Cool TP04 Air Purifier and Tower Fan, this two-stage sealed 360° Pure Cool cleaning fan filter enhances air quality by combining HEPA and activated carbon filtration. The activated carbon filter significantly improves the filtering effect, ensuring better air quality. Technical specifications Part number: #969048-01 Includes: 2 HEPA filters, 2 activated carbon filters Usage The replacement air purifier filters are washable and reusable for a long service life. To maintain optimal performance, place the activated carbon filter under the sun for 15 to 30 days for rejuvenation.