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17.5x23.5x1 (17.1 x 23.1) Filtrete Allergen Defense 1000 Filter by 3M™
- 1000 Performance Rating, MERV 11 Rating.
- Up to 30 times more effective at capturing micro particles than ordinary fiberglass filters.
- Meets the American Lung Association's Health House Project indoor air quality guidelines.
- Outperforms all competitors' 3 month, 1" filters.
- Airborne micro particles, including smoke.
- Airborne allergens, including pollen, pet dander, mold and bacteria.
- Large particles like dust and lint.
- Up to 3 months of filtering performance.
- No unnecessary antimicrobial chemicals added. Filtrete filtering material will not support the growth of bacteria, mold, mildew or fungi in normal use.
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