SpiroPure 17.5x21.5x1 MERV 11 Pleated Filter Air Filters - Made in USA (6 Pack)

<p>Find a value pack of high quality replacement furnace filters from SpiroPure. SpiroPure pleated AC &amp; Furnace filters are made in the USA and are the perfect choice for most standard residential and light commercial air conditioner and furnace units. <strong>Please measure your existing furnace filter before ordering</strong> to ensure that this size will be compatible with your AC &amp; furnace system.</p><p><strong>MERV 11</strong> rated filters are the perfect efficiency upgrade for homes that contain pets, cigarette smoke, or other additional pollutants. The 85% or better efficiency of particles sized 3 to 10 microns, with the added 65% to 89% of particles sized 1 to 3 microns, means that MERV 11 filters are an excellent choice for those who suffer from asthma, severe allergies, and other respiratory related illnesses.</p><p>SpiroPure <strong>MERV 11</strong> Pleated Filters remove the following household contaminants:&nbsp;</p><ul><li>Lint &amp; Dust</li><li>Dust Mite Debris</li><li>Pollen</li><li>Mold Spores</li><li>Pet Dander</li><li>Auto Emissions</li><li>Smoke</li></ul><p>We recommend replacing your furnace filter every 3 to 4 months for maximum efficiency and cooling and heating system life. A dirty filter restricts airflow, which can put too much strain on the system. As a result, there can be motor burnout and an overheated system. The leading cause for HVAC system failure is a dirty air filter.</p>&gt;

• 17.5x21.5x1 ACTUAL: The actual size of this replacement filter is 17.5x21.5x0.75
• MERV 11 RATING: With an efficiency of 85% or better, these filters are usually the best option for residential homes & light commercial applications that have pets or suffer from asthma, severe allergies, or other respiratory problems.
• FILTERS ALLERGENS: Removes potential allergens such as dust, lint, dust mite debris, pollen, mold spores, pet dander, auto emissions, and smoke.
• QUALITY REPLACEMENT: Comparable to a 3M Filtrete MPR rating of 1000-1200 (Allergen Defense and Dual-Action Micro Allergen Dust Defense models).
• MADE IN USA: Our pleated furnace filters are Made in the USA and offer a high quality replacement air filter option for your air conditioner and/or furnace unit without the high cost.