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Filtrete 500
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$21.42 Free Shipping20 x 25 x 1 3M Filtrete 500 Dust & Pollen Refillable Filter
Includes One Frame + 1 Refill- 3M Filtrete 500 Performance Rating.
- Up to 10 times more effective at capturing micro particles than ordinary fiberglass filters.
- Captures large, airborne allergens like mold spores and large dust particles.
- 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.