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18x20x1 air filter

Popular Filters

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

$89.97 - $198.48

Simply Air Filter, MERV 13, 12 Pack, Furnace Air Filter for HVAC

4.6(607)

Loved for: quality filtration

$65.99($11.00/count)

Filtrete 16"x20"x1" 6pk Allergens & Pet Dander MPR 1000 MERV 11 Electrostatic Captures Dust and Pollen HVAC Furnace Air Filter

4.7(511)

$19.99 - $31.99

reg $35.98 - $53.98

Sale

HEATDAZ Air Purifier Replacement Filter, True HEPA Filter Compatible with Chivalz Air Purify 1 8 0 0

$23.49

Filtrete 14"x14"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.6(8)

$22.99

Filtrete 16"x24"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.8(649)

Loved for: great filtration

$39.96

Filterbuy 16x20x1 Air Filter (6-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 15.50 x 19.50 x 0.75)

4.7(27772)

Loved for: quality

$46.97 - $129.97

Simply Air Filter, MERV 13, 6 Pack, Furnace Air Filter for HVAC, Multiple Sizes

4.6(607)

Loved for: quality filtration

$28.99

Filterbuy 18x20x2 Air Filter (1-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 19.50 x 1.75)

4.7(27772)

Loved for: quality construction

$22.99

Filtrete 12"x12"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

5(4)

$61.99($10.33/count)

Filtrete 20"x20"x1" 6pk Allergens Bacteria & Viruses MPR 1500 MERV 12 Electrostatic Pleated HVAC Furnace Air Filter

4.8(508)

$37.98

Filterbuy 20x20x1 Air Filter (6-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 19.50 x 19.50 x 0.75)

4.7(27772)

Loved for: quality

$28.99 - $91.99

Aerostar AC Furnace Air Filter - Allergy - MERV 11 - Box of 6

4.2(14)

Sponsored

$34.96

Filterbuy 18x20x1 Air Filter (4-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 19.50 x 0.75)

4.7(27772)

Loved for: quality

$62.99($31.50/count)

was $69.99

New lower price

Filtrete 20"25"x4" MPR 1550 Merv 12 Refillable Air Filter Kit 1 Frame and 2 Filters

4.8(140)

$18.49

Filtrete 20"x24"x1" Allergens Bacteria & Viruses MPR 1500 MERV 12 Electrostatic Pleated HVAC Furnace Air Filter

4.8(510)

$28.97 - $74.97

Simply Air Filter, MERV 8, 4 Pack, Furnace Air Filter for HVAC, Multiple Sizes

4.6(607)

Loved for: great quality

$29.96

Filterbuy 20x20x1 Air Filter (4-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 19.50 x 19.50 x 0.75)

4.7(27772)

Loved for: quality construction

$18.49

Filtrete 20"x25"x1" Allergens Bacteria & Viruses MPR 1500 MERV 12 Electrostatic Pleated HVAC Furnace Air Filter

4.8(574)

$59.98

Filterbuy 18x20x1 Air Filter (2-Pack), Pleated MERV 8 Odor Eliminator Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 19.50 x 0.75)

$38.97

Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control

4.6(608)

Loved for: great quality

$47.96

Filterbuy 20x20x1 Air Filter (4-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 19.50 x 19.50 x 0.75)

4.6(16805)

$57.96

Filterbuy 18x20x1 Air Filter (6-Pack), Pleated MERV 13 Health Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 19.50 x 0.75)

4.6(16805)

Loved for: easy installation

$32.98 - $49.94

Aerostar AC Furnace Air Filter - Allergy - MERV 11 - Box of 4

3.9(21)

$39.99($20.00/count)

Filtrete 14"x25"x1" 2pk Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.5(2)

Sponsored

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