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18 x 20 x 1 Air Filters

13 results

Filtrete 18-in W x 20-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter

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4.7
2231
Air Filter Longevity:3 month

Filtrete 18-in W x 20-in L x 1-in MERV 1 Basic flat Air Filter 2 -Pack

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4.3
1313
Air Filter Longevity:3 month

Filtrete 18-in W x 20-in L x 1-in MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter

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4.5
366
Air Filter Longevity:3 month

Project Source 18-in W x 20-in L x 1-in MERV 8 Electrostatic pleated Air Filter

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4.4
19
Air Filter Longevity:3 month

Air-Care 18-in W x 20-in L x 1-in Washable MERV 8 Electrostatic Air Filter

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4.5
138

Filtrete 18-in W x 20-in L x 1-in MERV 8 700 MPR Dust, Pollen, and Pet Dander Reduction Electrostatic Air Filter

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Air Filter Longevity:3 month

K&N 18-in W x 20-in L x 1-in Washable MERV 8 Pleated Air Filter

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Air Filter Longevity:3 month

Filtrete 18-in W x 20-in L x 1-in MERV 8 Pleated Air Filter 6 -Pack

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5.0
1
Air Filter Longevity:3 month