[Compatible Model]This product is fully compatible with for Shark Vacuum Cleaner models including IW3511/ IW1111. Please confirm that your machine model matches one of our compatible products before purchasing. [Washable & Reusable]Maximize cost-efficiency by rinsing our filters thoroughly with clean water, allowing them to dry thoroughly, and reusing them. For peak performance, we recommend replacing the filter set every 1-3 months to help extend the lifespan of your vacuum cleaner. In addition, the odor neutralizer cartridge is not washable, and it is recommended to replace the scent neutralizer every 1-3 months when the scent fades. [Premium Material]The IW1111 filter is made of plastic material. Can capture dander, dust, and hair with filtration. effectively help remove the dirt and enjoy a clean environment at home.Provide you and your family with a better fresh air and living environment. [Washable and reusable]The IW1111 filter kit is washable and reusable, expect the odor neutralizer cartridge. It is recommended to clean the IW1111 filters and foam felt filter set once a month [Easy Installation] When it needs to be replaced, just remove and replace it from your machine equipment, no tools are required.<br><br>Material: Plastic colour: As shown<br><br>Package Contents: 2 x black filter cartridges 4 x Black Filter Cottons 2 x Aroma Diffuser 2 x curved filters 4 x Sets of Filter Cotton 2 x High Efficiency Filters 1 x cleaning brush<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.