1" Depth Air Filters

Air and furnace filters with a 1-inch depth are available in five different levels of filtration: Basic, advanced, premium ultimate and elite. Choose the right filtration level for your home based on the impurities that are filtered out. While all filters with 1-inch depth remove lint, dust, dander, mold spores and pollen, only a select few are powerful enough to reduce odor, fine dust and bacteria. Use the comparison chart below to find the right 1-inch air filter for your home.



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  1. 21 1/2x21 1/2x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $70.99 List Price Price $100.99 Save 29%
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  2. 21x23x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $69.99 List Price Price $99.99 Save 30%
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  3. 20x23x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $68.99 List Price Price $98.99 Save 30%
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  4. 20x21 1/2x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $61.99 List Price Price $88.99 Save 30%
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  5. 18x30x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $69.99 List Price Price $99.99 Save 30%
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  6. 18x20x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $48.99 List Price Price $69.99 Save 30%
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  7. 16 3/8x21 1/2x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $52.99 List Price Price $82.99 Save 36%
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  8. 16x36x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $83.99 List Price Price $119.99 Save 30%
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  9. 16x22x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $58.99 List Price Price $90.99 Save 35%
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  10. 14x18x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $44.99 List Price Price $64.99 Save 30%
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  11. 14x16x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $47.99 List Price Price $75.99 Save 36%
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  12. 13x21 1/2x1 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    Price $46.99 List Price Price $73.99 Save 36%
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