18 MICROFILTRATION VACUUM BAGS DESIGNED TO FIT SIMPLICITY TYPE H (INCLUDING S13, S13L, S14, S14CL, S18, S24) VACUUMS. ALSO FITS RICCAR RC-1400 & RC-1500 SERIES VACUUMS. THIS LISTING IS FOR 3 PACKS EACH WITH 6 BAGS. THESE BAGS ARE THE BEST QUALITY REPLACEMENT MICROFILTRATION BAGS AVAILABLE. MICRO BAGS HAVE 99.7% FILTRATION AND ARE A MUST FOR ANY ALLERGY SUFFERER BUT AT THIS PRICE EVERYONE SHOULD USE THEM.