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18 x 18 x 1 Air Filters

16 results

Filtrete 
18 x 18 x 1 MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter 2 -Pack

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for pricing and availability

4.7
12277
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18 x 18 x 1 MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter 3 -Pack

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for pricing and availability

4.6
1889
Dimensions:18L x 18W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18 x 18 x 1 MERV 13 1900 MPR Premium Allergen, Bacteria and Virus Electrostatic pleated Air Filter

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for pricing and availability

4.8
4182
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18 x 18 x 1 MERV 12.0 1500 MPR Allergen, Bacteria and Virus Electrostatic pleated Air Filter

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for pricing and availability

4.8
3249
Dimensions:18L x 18W x 1T
Air Filter Longevity:3 month

Filtrete 
18 x 18 x 1 MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter

Find My Store

for pricing and availability

4.7
12302
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Project Source 
18 x 18 x 1 MERV 8 Electrostatic pleated Air Filter 3 -Pack

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for pricing and availability

4.5
20
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18 x 18 x 1 MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter

Find My Store

for pricing and availability

4.6
1889
Dimensions:18L x 18W x 0.8T
Air Filter Longevity:3 month

K&N 
18 x 18 x 1 Washable MERV 8 Pleated Air Filter

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for pricing and availability

5.0
1
Dimensions:17.6L x 17.6W x 0.8T
Air Filter Longevity:3 month