Ultra Allergen Pleated Filter, 3-Month, Purple, 18 x 24 x 1-In. Stops Bit is constructed of M-2

Bit is constructed of M-2 high speed steel for the best combination of strength

interior/exterior

Crunchy dog kibble combined with tender

Heavy-duty carrying case included

In Ergonomic Spray Bottle

Ultra Allergen Pleated Filter, 3-Month, Purple, 18 x 24 x 1-In. Stops Bit is constructed of M-218" x 24" x 1", purple, ultra allergen filtrete pleated filter, 3 month filter is 90% effective at capturing large allergens like mold spores & pet dander, electrostatically charged, captures microscopic allergens like dust, smoke & smog, captures bacteria & particles that can carry viruses, meets the guidelines of the american lung association health house program, mpr rating 1500, lasts up to 3 months.