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 suitable HEPA material of the cleaner: our 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-large particles, reduce dust particles that can swim in your room air, significantly improve your usage efficiency and maintain clean space Applicable occasions: this crossover filter helps most dust particles, floating flakes, water stains, dirt residue, hair, etc. It works with your machine to improve efficiency and not hinder your machine operation, good air circulation until your vacuum cleaner is filled with rubbish SAVE MONEY - The outer frame is made of material. The attached cleaning brush can help you clean the dust after use, increase the life of the product and improve your use efficiency Easy to clean and replace: the 1866F vacuum filter can be replaced daily without tools, washed under running water and dried thoroughly before reuse. It is recommended to replace the crossover filter every 2-3 months color:Photo color Material:plastic Package Contents: 4 x filter 1 x 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.