Better Compatibility - Our cartridge is compatible with Miele Triflex hx1 FSF vacuum cleaners. Available as a perfect replacement, this feature is compatible with the original. Repeated Cleaning - The triflex hx1 vacuum cleaner filter is a reusable filter that lasts longer and filters better. Efficient and Durable - The pleated material of the replacement filter ensures good air permeability and effective dust filtration to capture ultrafine dust particles. Make your vacuum cleaner last longer. Easy Installation - The fine dust filter is easy to install, and the filter can be removed and replaced quickly and easily. By twisting the filter, the filter can be removed from the container.