27 DESIGNED TO FIT EUREKA PL MICROFILTRATION VACUUM BAGS. THESE BAGS ARE THE BEST QUALITY REPLACEMENT MICROFILTRATION BAGS AVAILABLE. DESIGNED TO FIT ALL EUREKA VACUUMS USING THE PL BAG. THIS LISTING IS FOR 9 PACKS EACH WITH 3 BAGS. MICRO BAGS HAVE 99.7% FILTRATION AND ARE A MUST FOR ANY ALLERGY SUFFERER BUT AT THIS PRICE EVERYONE SHOULD USE THEM.