Despite UNIBAG filters having the same economical pricing as a similar bag with a sewn design, Eaton's polyester bags offer a fully welded design, which guarantees no particles escape from sewn holes. Furthermore, the material, which is crafted from at least 40 percent recycled fibers, is specially treated to ensure minimum fiber shedding. The Kopel seal ring gives a high-temperature resistant closure, and the ringà ¯Ã‚ ¾Ã¢â‚¬â„¢s handle means replacement is quick and simple. These 100 percent bypass-free filter bags are thoroughly tested to meet Eaton's high standards of satisfactoriness, have a micron rating of 100, and are a size 2. Sold in quantities of 30.