Target New Arrivals Back to School College Clothing, Shoes & Accessories Home & Decor Kitchen & Dining Outdoor Living & Garden Grocery Household Essentials Baby Beauty Personal Care Sports & Outdoors Health Wellness School & Office Supplies Toys & Games Electronics & Tech Video Games Movies, Music & Books Party Supplies Gift Ideas Gift Cards Pets Ulta Beauty at Target Shop by Community Target Optical Deals Clearance New Arrivals Back to School College Top Deals Target Circle Deals Weekly Ad Shop Order Pickup Shop Same Day Delivery Registry RedCard Target Circle Find Stores

18x21x1 air filter

1,000+ results for “18x21x1 air filter”

$9.99

Filtrete 18"x 24"x 1" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Compatible, 3-Month Use

5(2)

$20.99

Filtrete 20"x20"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.8(700)

$13.49

Filtrete 18"x18"x1" Allergens & Pet Dander MPR 1000 MERV 11 Electrostatic Captures Dust and Pollen HVAC Furnace Air Filter

4.7(533)

$9.99

Filtrete 12"x 24"x 1" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Filter, 3-Month Use

4.2(6)

$14.99

Filtrete 12x36x1 Allergen Defense Air Filter 1000 MPR: MERV 11, Electrostatic, Captures Dust & Pollen, Lasts 3 Months

4.7(518)

$23.49

Filtrete 16"x25"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.8(682)

$14.89

Filtrete 14"x24"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.8(659)

$9.99

Filtrete 14"x 24"x 1" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Compatible

5(2)

$23.49($11.75/count)

was $42.49

New lower price

Filtrete 20"x30"x1" 2pk Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

5(3)

$14.99

Filtrete 17.5x17.5x1 Allergen Defense Air Filter 1000 MPR: MERV 11, Electrostatic, Captures Dust & Pollen, 3-Month Use

4.7(518)

Loved for: Effective Air Filtration

$9.99

Filtrete 20" x 20" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC, 3-Month Use

4.5(35)

$13.49

Filtrete 18"x30"x1" Allergens & Pet Dander MPR 1000 MERV 11 Electrostatic Captures Dust and Pollen HVAC Furnace Air Filter

4.7(550)

Sponsored

$45.49($22.75/count)

was $59.99

New lower price

Filtrete 16"25"x4" MPR 1550 Merv 12 Refillable Air Filter Kit 1 Frame and 2 Filters

4.8(138)

Loved for: Durable Frame

$29.99($15.00/count)

Filtrete 16"x25"x1" 2pk Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.4(5)

$29.98

Filterbuy 19.5x24.5x1 Air Filter (2-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 19.50 x 24.50 x 0.75)

FilterbuyNew at

$29.99

Filterbuy 17.5x24.5x1 Air Filter (1-Pack), Pleated MERV 8 Dust Defense Replacement HVAC AC Furnace Filters (Actual Size: 17.50 x 24.50 x 0.75)

FilterbuyNew at

$22.99

Filtrete 20"x30"x1" Allergens Bacteria Viruses & Air Pollutants MPR 1900 MERV 13 Electrostatic Pleated HVAC Furnace Air Filter

4.8(659)

$9.99

Filtrete 12"x 12"x 1" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8 Furnace & AC Filter, 3-Month Use

3(1)

$21.99($11.00/count)

Filtrete 18"x24"x1" 2pk Allergens & Pet Dander MPR 1000 MERV 11 Electrostatic Captures Dust and Pollen HVAC Furnace Air Filter

4.7(518)

$9.99

Filtrete 14"x 25"x 1" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Compatible

5(2)

$9.99

Filtrete 20" x 25" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Filter, 3-Month Use

4.8(133)

Loved for: effective filtration

$9.99

Filtrete 16" x 25" MPR 700 Dust Pollen and Pet Dander Electrostatic Air Filter: MERV 8 Furnace & AC Filter

4.7(138)

Loved for: effective filtration

$46.97 - $129.97

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

4.6(604)

Loved for: great quality

$10.99

Filtrete 16" x 20" MPR 700 Dust Pollen & Pet Dander Electrostatic Air Filter: MERV 8, Furnace & AC Filter, 3-Month Use

4.7(137)

Loved for: effective filtration

Sponsored

Get top deals, latest trends, and more.