Dimensions: outer diameter 7.4" (18.8cm), inner diameter 5.94" (15cm), height: 6.7" (17cm). Just remove the old filter and put the new one back in place.
Replace Filter: When your existing filter is clogged, replacing the old filter helps reduce indoor dust and protect the vacuum cleaner motor from damage.( Recommended replacement every 3-6 months)
Washable and reusable: Made of PP composite material, which can be washed with gentle ones, and reused after drying.
Contact us: This cleaner accessory is not a Hepa cartridge. Fits for Shop Vac part NO. 90304. If you buy it and it doesn't fit, please feel free to contact us.