
Opt for a Filtrete Allergen Defense Air Filter to transform your central heating and cooling system into a whole-home air filtration operation. This no-nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog).
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Opt for a Filtrete Allergen Defense Air Filter to transform your central heating and cooling system into a whole-home air filtration operation. This no-nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog).

The Shark Air Purifier 6-Fan NANOSEAL Filter with true HEPA and Advanced Odor Lock captures 99.98% of large, small, & micro-sized particles from the air and is equipped with carbon for heightened protection against household odors and VOCs.

The Blue Pure 311i Max SmokeBlock Replacement Filter is the ultimate tool against wildfire season. Additional activated carbon removes 99.99% of wildfire smoke* along with extra protection against other wildfire emissions such as toxic gasses, smog and odors** while also eliminating harmful gaseous pollutants such as volatile organic compounds (VOCs). In addition, advanced polypropylene filter media removes particle pollutants down to 0.1 micron in size from your indoor air, such as pollen, dust, and pet dander. Using a 360-degree air intake and up to 4 times the filter surface area vs. the same models with only mechanical filtration (H13 filter), the Blue Pure 311i Max SmokeBlock filter lasts longer, on average 6 months. Subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months depending on usage. ULTIMATE TOOL AGAINST WILDFIRE SEASON: 99.99% wildfire smoke removal based on removal testing of particles 0.4-0.7um in 60min in a 30m3 room. Performance may vary. Also tested on benzene, toluene, nitrogen oxide, sulfur dioxide. FILTERS BUILT TO LAST: Blueair models with HEPASilent's mechanical and electrostatic filtration produced higher CADR, lower noise, and had lower energy consumption vs. the same models with only mechanical filtration (H13 filter).

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Honeywell & AprilAire Space-Gard, Certified Asthma & Allergy Friendly, Electrostatic Filter, 2-Pack (Actual Size 19.88x24.63x4.31 in)
| Pros for Filtrete - Allergen Defense 16" x 25" x 1" Pleated Air Filter, MERV 11, 4/Carton - White | |||
|---|---|---|---|
| There were no pros for this product— | Filter Life, Air Quality, Performance, Odor Removal, Ease of use | There were no pros for this product— | There were no pros for this product— |
| Cons for Filtrete - Allergen Defense 16" x 25" x 1" Pleated Air Filter, MERV 11, 4/Carton - White | |||
| There were no cons for this product— | Price | There were no cons for this product— | There were no cons for this product— |