Kirby Style "F" 204808 Allergen Reduction Vacuum Bags. Fits Kirby Sentria 2009 year and newer. These Large capacity bags are a HEPA filtration bags made from a synthetic material. The synthetic material is ideal for allergy sufferers as these bags prohibit the growth of bacteria within the bags as well as providing 99.97% filtration. This bag meets the H11 filtration certification. For Kirby vacuum owners that have older models and would like to use these please make sure your vacuum is set up for the style "F" bags buy purchasing the conversion kit 49-2505-07 (our number) this conversion includes all of the parts needed to change your Kirby vacuum over to this new style of bag. ATTENTION: Please notice the cardboard mounting area of the vacuum bag before ordering. This is the newest design and some machines may already have the conversion made to it. {This site is neither endorsed, nor sponsored by, nor affiliated with The Scott Fetzer Co. The marks Sentria, Kirby G6 and Ultimate G are registered trademarks of The Scott Fetzer Co.} Buy 2 or more and receive Free Shipping.