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air filter 18x20x1

1,000+ results for “air filter 18x20x1”

$64.96

Filterbuy 12x18x2 Air Filter (4-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 11.50 x 17.50 x 1.75)

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Loved for: high quality

$139.95

Filterbuy 13x18x4 Air Filter (5-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.00 x 18.00 x 3.63)

$137.94

Filterbuy 14x18x4 Air Filter (6-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.50 x 17.50 x 3.63)

4.5(3314)

Loved for: quality construction

$199.92

Filterbuy 10x18x2 Air Filter (12-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 10.00 x 18.00 x 1.75)

$88.96

Filterbuy 12x18x2 Air Filter (4-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 11.50 x 17.50 x 1.75)

4.6(1308)

Loved for: perfect fit

$219.96

Filterbuy 10x18x4 Air Filter (12-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 10.00 x 18.00 x 3.63)

$139.96

Filterbuy 18x18x4 Air Filter (4-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 17.50 x 3.63)

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Loved for: affordable pricing

$107.94

Filterbuy 16x18x2 Air Filter (6-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 16.00 x 18.00 x 1.75)

$193.95

Filterbuy 18x18x4 Air Filter (5-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 17.50 x 3.63)

4.4(3049)

Loved for: effective filtration

$95.97

Filterbuy 18x18x4 Air Filter (3-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 17.50 x 3.63)

4.5(3314)

Loved for: quality construction

$74.98

Filterbuy 16x18x4 Air Filter (2-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 16.00 x 18.00 x 3.63)

$84.98

Filterbuy 18x18x4 Air Filter (2-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 17.50 x 3.63)

4.4(3309)

Loved for: affordable pricing

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$162.96

Filterbuy 12x18x4 Air Filter (6-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 11.50 x 17.50 x 3.63)

4.4(3309)

Loved for: affordable pricing

$123.96

Filterbuy 16x18x2 Air Filter (6-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 16.00 x 18.00 x 1.75)

$161.95

Filterbuy 13x18x4 Air Filter (5-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.00 x 18.00 x 3.63)

$126.96

Filterbuy 10x18x4 Air Filter (6-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 10.00 x 18.00 x 3.63)

4.5(3314)

Loved for: effective dust reduction

$63.99

Filterbuy 18x18x2 Air Filter (3-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.75 x 17.75 x 1.75)

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Loved for: quality filters

$108.95

Filterbuy 10x18x4 Air Filter (5-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 10.00 x 18.00 x 3.63)

$81.98

Filterbuy 12x18x4 Air Filter (2-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 11.50 x 17.50 x 3.63)

4.4(3049)

Loved for: effective filtration

$81.95

Filterbuy 18x18x2 Air Filter (5-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.75 x 17.75 x 1.75)

4.6(1246)

$199.92

Filterbuy 13x18x2 Air Filter (12-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.00 x 18.00 x 1.75)

$69.96

Filterbuy 14x18x2 Air Filter (4-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.50 x 17.50 x 1.75)

4.6(2094)

Loved for: high quality filters

$72.99

Filterbuy 10x18x4 Air Filter (3-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 10.00 x 18.00 x 3.63)

$107.94

Filterbuy 13x18x2 Air Filter (6-Pack), Pleated MERV 11 Allergen Defense Replacement HVAC AC Furnace Filters (Actual Size: 13.00 x 18.00 x 1.75)

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