Additional Details ------------------------------ Product description: Fits original manufacture part numbers 918955-02, 914790-01, DYR-1816, DYR1816. Designed to fit Dyson DC-25 Ball Vacuums: All Floors Iron/Metallic Platinum Dyson DC25 Animal Iron/Silver/Metallic, Purple Dyson DC25 Blitz It Iron/Silver/Metallic, Red Dyson DC25 Drawing White/Ink Blue/Light, Steel DC25i Iron/Bright, Silver/White DC25 Multi Floor Iron/Silver/Satin, Yellow DC25 Overdrive Iron/Satin, Blue. This filter is located under the dust bin. Remove the dust bin then check for where the air is being exhausted. For best cleaning results, change this filter every 3-6 months. When you notice the suction on your vacuum decreased, clean or replace the filter. (Make sure it is totally dry before replacing it in the vacuum.) HEPA filtration systems trap and seal in 99.9% of dust mites, pollens, ragweed, mold spurs, microscopic particles, bacteria, dust mites, germs as small as 0.1 micron., other allergy causing agents, and 99.9% of pet dander.