[Perfect Compatibility]This product is fully compatible with for Vacuum Cleaner models including for IW3511/ IW1111. Please confirm that your machine model matches one of our compatible products before purchasing. [ combo set]Keep your home clean and comfortable with our comprehensive cleaning combo set that includes 1 Hand Pre-Motor Filter, 1 Hand HEPA Filter, 1 Dock Pre-Motor Filter Assembly, 1 Dock HEPA Filter Assembly, 1 odor neutralizer , and 1 Cleaning Brush. [Washable & Reusable]Maximize cost-efficiency by rinsing our filters thoroughly with clean water, allowing them to dry thoroughly, and reusing them. For 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 is not washable, and it is recommended to replace the scent neutralizer every 1-3 months when the scent fades. [Premium Material] The filter is made of high-toughness material, specifically designed for use with vacuum cleaners. It effectively blocks up to 99.97% of fine dust, including tiny particles and pollen down to 0.3 microns. We aim to create a fresher and more comfortable home for those who wish to air. [Easy Replacement & Installation] No tools required for filter replacement. Simply remove and replace the filters from your vacuum cleaner equipment when needed. Quick and convenient, making your cleaning tasks smoother. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:Plastic Package Contents: 1x black filter 1x black filter 1x Aroma Diffuser 1x Half Round Filter 1x round filter 1x Cotton Filter Set 1x Cleaning Brush 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.