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Title: Overpriced and limited use
Review: This product comes with two filters (specifications unknown) and two "gaskets" which adhere the unit to the plane's air nozzle. In my experience, the first application worked but the second application did not stick. After changing the gasket, it still did not stick. In addition, although there is a "centering ring" for small nozzles, there seems to be a problem fitting the unit onto other sizes of nozzles. I will return this product because there is a problem fitting it onto plane air nozzles, the filter is probably no more effective than using tissues, the adhesive gasket has a short shelf-life, and the product is way overpriced.
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