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18x18x1 177 x 177 Filtrete Ultimate Allergen Reduction 1900 Filter by 3M 2 Pack
Product Description :
Nominal Size 18x18x1 Actual Size 177x177x1
93 effective at capturing large airborne allergens such as pollen mold spores and dust mite debris
1900 Microparticle Performance Rating
Captures microscopic particles like smoke smog dander bacteria and particles that carry viruses and odors
Lasts up to 3 months