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18 x 18 x 1 Air Filters
Choose between a number of different 18 x 18 x 1 air filters that will fit your furnace or air conditioner, each having its own unique benefits and features. When choosing consider what features are important to you: brand, quality level, efficiency, or allergen type. Whether you want to reduce pollen and pet dander or dust mites and bacteria, find the right 18 x 18 x 1 air filter for your home.
18x18x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)
Price $62.11 List Price Price $88.99 Save 30%Free Shipping18x18x1 Merv 11 Universal Air Filter By Tier1 (6-Pack)
Price $94.87 List Price Price $135.99 Save 30%Free Shipping18x18x1 Merv 13 Universal Air Filter By Tier1 (6-Pack)
Price $104.61 List Price Price $148.99 Save 29%Free Shipping