MERV 1–7 filters (most commonly MERV 1–4 fiberglass) are built for one job: protect your HVAC equipment from large debris. Affordable, high-airflow, and ideal for rentals, backup stock, and monthly-change schedules.

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  • 18x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011830 (12 Filters)
    MERV 1-4
    AAF Flanders

    18x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $93.99
    $93.99
    Case of 12 $7.83/filter
  • 24x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012436 (12 Filters)
    MERV 1-4
    AAF Flanders

    24x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $149.99
    $149.99
    Case of 12 $12.50/filter
  • 10x10x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011010 (12 Filters)
    MERV 1-4
    AAF Flanders

    10x10x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $64.99
    $64.99
    Case of 12 $5.42/filter
  • 30x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.013030 (12 Filters)
    MERV 1-4
    AAF Flanders

    30x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $249.99
    $249.99
    Case of 12 $20.83/filter
  • 16x18x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011618 (12 Filters)
    MERV 1-4
    AAF Flanders

    16x18x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $65.99
    $65.99
    Case of 12 $5.50/filter
  • 23x20x1 Filters Basic MERV 4 10055.01499 23 x 20 x 1 E (12 pack)
    AAF Flanders

    23x20x1 Filters Basic MERV 4 23 x 20 x 1 E

    $191.99
    $191.99
    Case of 12 $16.00/filter
  • 20x22-1/4x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.01202214 (12 Filters)
    MERV 1-4
    AAF Flanders

    20x22-1/4x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $74.99
    $74.99
    Case of 12 $6.25/filter
  • 12x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011230 (12 Filters)
    MERV 1-4
    AAF Flanders

    12x30x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $72.99
    $72.99
    Case of 12 $6.08/filter
  • 19x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011922 (12 Filters)
    MERV 1-4
    AAF Flanders

    19x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $95.99
    $95.99
    Case of 12 $8.00/filter
  • 21x21x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012121 (12 Filters)
    MERV 1-4
    AAF Flanders

    21x21x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $95.99
    $95.99
    Case of 12 $8.00/filter
  • 12x18x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011218 (12 Filters)
    MERV 1-4
    AAF Flanders

    12x18x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $63.99
    $63.99
    Case of 12 $5.33/filter
  • 18x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.011825 (12 Filters)
    MERV 1-4
    AAF Flanders

    18x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $67.99
    $67.99
    Case of 12 $5.67/filter
  • 22x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012222 (12 Filters)
    MERV 1-4
    AAF Flanders

    22x22x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $95.99
    $95.99
    Case of 12 $8.00/filter
  • 25x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012525 (12 Filters)
    MERV 1-4
    AAF Flanders

    25x25x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $96.99
    $96.99
    Case of 12 $8.08/filter
  • 20x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter 10055.012036 (12 Filters)
    MERV 1-4
    AAF Flanders

    20x36x1 Flanders EZ Flow Fiberglass MERV 1-4 Filter

    $146.99
    $146.99
    Case of 12 $12.25/filter
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MERV 1–7 Air Filters — HVAC, Furnace & AC

MERV 1–7 filters (most commonly MERV 1–4 fiberglass) are built for one job: protect your HVAC equipment from large debris. Affordable, high-airflow, and ideal for rentals, backup stock, and monthly-change schedules. Not an air quality solution.

What MERV 1–7 Captures

  • Dust, lint, and hair
  • Carpet fibers and large debris
  • Insects and cobwebs

What It Doesn't Capture

  • Pollen, pet dander, mold spores, smoke, allergens (requires MERV 8 or higher)

Is MERV 1–7 Right for My System?

Best for: property managers, landlords, HVAC contractors stocking service vehicles, homes prioritizing airflow over filtration, and pre-filter roles in multi-stage systems.

Not ideal for: homes with pets, allergies, asthma, or air quality concerns—step up to MERV 8 or higher pleated filtration.

How Often Should I Change a MERV 1–7 Filter?

Every 60–90 days for 1″ and 2″ filters in a typical residential or light-commercial system. Homes with pets, high occupancy, or heavy HVAC cycling may need every 30–60 days. 4″ and 5″ media cabinets typically run 6–12 months.

Why Buy MERV 1–7 Filters From RememberTheFilter.com

  • Trusted brands — AAF Flanders, Koch, and our own PrimeShield line.
  • Filter Fit Guarantee — if the size doesn't fit as expected, we'll make it right.
  • Free shipping over $50, subscribe & save up to 10%, commercial & bulk pricing available.

Not sure which rating your system can handle? Take our MERV quiz or call 1-866-469-8556.