Compatibility: This product is a 1866F vacuum filter, which is mainly compatible for the Crossover 17132, 2225N, 2582N, 25821, 2519, 1785, 1926 series and also for the Crossover 2306, 2554, 2303 and other models of machines. Take on the appearance, size and material of 1:1 reduction, which is more comfortable and suitableHEPA material of the cleaner: for crossover filter uses H13 high quality vacuum HEPA filter, which is commonly used in air purifier to filter HEPA. It can help 99.97% of 0.3 Micrometre- particles, reduce dust particles that can swim in your room air, significantly your usage efficiency and maintain clean spaceApplicable occasions: this crossover filter helps most dust particles, floating flakes, water stains, dirt residue, hair, etc. It works with your machine to efficiency and will not your machine operation, good air circulation until your vacuum cleaner is filled with rubbishSAVE MONEY - The outer is made of durable material. The attached cleaning brush can help you clean the dust after use, increase the life of the product and your use efficiencyEasy to clean and replace: the 1866F vacuum filter can be replaced daily without tools, washed under running water and dried thoroughly reuse. It is recommended to replace the crossover filter 2-3 monthscolor:Photo colorMaterial:plasticPackage Contents:4 x filter1 x cleaning brushOnly 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.