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18x36x1 Air Filter

Find the 18x36x1 air filter that is right for your home or business. Choose your MERV rating based on the debris that is commonly found in your home and select a 6-pack or 12-pack bundle depending on how often you change your filters or how many filters you wish to replace. Our American-made filters all include a price match guarantee and free shipping. Buy yours today!
  • Home Basic

    Fiberglass | MERV Rating 6
    18 x 36 x 1 MERV 6 Fiberglass Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 17 3/4" x 35 3/4" x 3/4"
    • Product #: D50S.011836
  • Home Select

    Pleated | MERV Rating 8
    18 x 36 x 1 MERV 8 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 17 7/8" x 35 7/8" x 3/4"
    • Product #: P80S.011836
  • Home Plus

    Pleated | MERV Rating 11
    18 x 36 x 1 MERV 11 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
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    • Actual Size: 17 3/4" x 35 3/4" x 3/4"
    • Product #: P15S.011836
  • Home Ultimate

    Pleated | MERV Rating 13
    18 x 36 x 1 MERV 13 Pleated Air Filter
    Get your First Filter Free with Auto Delivery
    View Terms and Conditions
    • Actual Size: 17 3/4" x 35 3/4" x 3/4"
    • Product #: P25S.011836
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