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True Blue

Model # 312121.4

Internet # 202446736

12 in. x 12 in. x 1 in. Allergen and Pet Protection Air Filter (4-Pack)

This item has been discontinued.
The Home Depot no longer carries this specific product.
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$31.96 /package



Model # 312121.4

Internet # 202446736

MERV RATING: 11 - FPR "Filter Performance Rating": 6 - Specifically designed for families with allergies and pets. 53 times more effective than fiberglass filters and will last up to 4 months. During the manufacturing process, we charge the filter media with an electric current. This process allows the filter to attract very small particles much the same way magnets attract metal. The end result is a far more effective filter. The Electrostatically Charged filter media filters sub-micron airborne allergens like dust, dirt, pollen, pet dander, dust mite debris, microscopic allergens, smoke and smog. 100% Synthetic filter media will not support the growth of Bacteria, Mold, or Fungi in normal use.

  • MERV rating: 11 FPR (Filter Performance Rating): 6
  • Last up to 4 months
  • 53 times more effective than fiberglass filters
  • Electrostatically charged filter media captures sub-micron airborne allergens
  • Filters dust, dirt, pollen, pet dander, dust mite debris, microscopic allergens, smoke and smog
  • Reduces dust and dirt buildup in air ducts, air conditioner, and furnace system
  • 100% synthetic filter media will not support the growth of bacteria, mold, or fungi in normal use
  • Check out the features for air filters that are FPR 6-7

    Air Filter FPR 7


Actual Product Depth (in.) 
Actual Product Height (in.) 
Actual Product Width (in.) 
Air Filter Depth (in.) 
Air Filter Height (in.) 
Air Filter Size 
12 in. x 12 in. 
Air Filter Width (in.) 
Air Filter Features 
Filters Bacteria,Filters Dust Mites,Filters Dust/Lint,Filters Mold Spores,Filters Pet Dander,Filters Pollen,Pleated 
Air Filter Type 
Filter Frame Material 
Filter Material 
Filter Performance Rating (FPR) 
6-7 - Better 
Longevity (months) 
MERV Rating (Minimum Efficiency Reporting Value) 
Warranty / Certifications
Manufacturer Warranty 
Contact Customer Service 


Rated 4.6 out of 5 by 55 reviewers.
Rated 5.0 out of 5.0 by Overall Great Value and Price I've always purchased the 3M Filtrete and when I found these filters at Home Depot I was very happy because they had a higher filter rating and lower price than I was paying with 3M products. December 20, 2011
Rated 5.0 out of 5.0 by Filter buying This is probably the best way to buy filters.the filters come 6 to a box and instead of going to the store every month, you 6 months that you can wait before ordering more. October 1, 2013
Rated 4.0 out of 5.0 by Good allergen protection for the price. Filter performs very well, the build quality is decent, and the sizing is near perfect. Overall I am happy with the purchase. June 16, 2015
Rated 5.0 out of 5.0 by Perfect Filters were exactly the right size for a newly installed vent. April 21, 2015
Rated 5.0 out of 5.0 by Good Price Good price for these filters. they work well for our home where we have pets... April 8, 2015
Rated 5.0 out of 5.0 by great value Great value for a good air filter without spending a lot of money April 7, 2015
Rated 4.0 out of 5.0 by allergy rating good Don't have to change filters so often when using this filter. March 31, 2015
Rated 5.0 out of 5.0 by Great Value Was looking for a good value in furnace filters and most places were so high per filter. I checked Home Depot online to see what they had and found them at a good price, but were they as good as the ones 3x the price? YES! They are exactly as advertised and I am very happy with the value I received. The difference in the air quality is remarkable and I dust much less than I did before. February 25, 2015
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