3M FILTRETE ALLERGEN DEFENSE MICRO ALLERGEN FILTER, MICROPARTICLE PERFORMANCE RATING 1000, 16 In X 25 In X 1 In, 3 Per Pack

– Attracts and captures microscopic allergens like pet dander, smoke, household dust, and large allergens like pollen and mold spores
– Carries a 1000 Microparticle Performance Rating (MPR)
– Lasts up to three months
– Outperforms fibreglass, washable, and non-electrostatic pleated 1-inch (2.5 cm) filters
– Noticeably fresher air
– For residential use only