Filter-Monster Replacement Compatible with Whirlpool Tower Air Purifier Filter Kit Compatible with Whirlpool Air Purifier APMT2001M, APT30010M, APT40010R, APT42010M, APT50010M

Air Quality Improvement: Filtration removes up to 99.97% of airborne particles as small as 0.3 microns in size including smoke, dust, pollen, pet dander, mold spores and dust mite debris

Maintenance: Recommended to replacement filter every twelve (12) months and pre-filter every three (3) months for maximum efficiency, or more often in harsh environments.

Approximate Dimensions: Filter - 5 x 10 7/10 x 1 4/5 inches Pre-Filter - 20 1/2 x 4 3/4 x 1/8 inches

What You Get: One (2) replacement filter and four (8) replacement pre-filters.