5 pack - True HEPA Replacement Filter for GermGuardian FLT5000/FLT5111 AC5000 Series, Filter C Germ Guardian 5 Pack - Filters to fit FLT 5000 FLT 5111 AC5000 Filter C True HEPA Filter - Captures 99.99% of particles Prevents mold, mildew and odor-causing bacteria on the surface of the filter. Brand New Individually Sealed Please note this replaces the Filter C, There is also a smaller filter B. Please confirm size before ordering