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18x25x1 Merv 11 Universal Air Filter By Tier1 (6-Pack)

Save 4% (MSRP: $55.34)

Tier1 1500 Air Filter - 18x25x1 (6-Pack)

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Our Tier1 18x25x1 Air Filter MERV 11 comes in a 6-Pack. These pleated high-capacity filters are constructed using electrostatically charged filter media from Kimberly-Clark - a recognized leader in the filtration industry. This 100% synthetic material offers significantly higher particulate efficiency than typical poly/cotton media pleated filters, and captures the smallest and most troublesome airborne particles and allergens, such as particles that carry viruses and bacteria, pollen, mold spores, fine dust and pet dander. The combination of high efficiency and excellent allergen reduction make these the ideal choice for homeowners looking to improve indoor air quality.

  • More efficient than our MERV 8 filter, and captures even smaller particles (1-10 microns in size)
  • Doesn't promote the growth of bacteria, mold, mildew, or fungi so they're a great choice for families with small children
  • Similar to the 3M Filtrete Ultra Allergen filter
  • Rated UL Class 2 by Underwriters Laboratories
  • Made in the U.S.A.


Package Qty 6
Used In Brands Tier1
Manufacturer's Id P15S.011825
UPC 700355931966
MERV Rating MERV:11
Microparticle Performance Rating (MPR) MPR:1500
Advertised Size (in) 18 x 25 x 1
Actual Size (in) 17 1/2 inches (length) x 24 1/2 inches (width) x 3/4 inches (depth)
Actual Size (cm) 44.45 x 62.23 x 1.905
Primary Filter Media Pleated Fabric
Filter Life (months) 3 months
Warranty Guarantee Unconditional Product Guarantee for Life of the Product


Reduces the following contaminants:
  • Dust
  • Pollen

The TIER1_P15S_611825_6_PACK is comparable with the following part numbers