EnviroCare EVCF977 is an aftermarket HEPA replacement filter compatible with Panasonic upright vacuum cleaners that use an EF-1 type HEPA filter. It is also listed as compatible with Kenmore upright models referencing HEPA filter part 86889. This is not an OEM Panasonic or Kenmore part; it is an EnviroCare aftermarket replacement compatible with those OEM references. HEPA-grade filtration captures particles down to 0.3 microns.