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21 x 21 x 1 Air Filters

6 results

Filtrete 
21-in W x 21-in L x 1-in MERV 12 1500 MPR Allergen, Bacteria and Virus Electrostatic pleated Air Filter

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4.8
3183
Dimensions:20.7L x 20.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
21-in W x 21-in L x 1-in MERV 5 Electrostatic Air Filter 3 -Pack

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for pricing and availability

4.7
1140
Dimensions:21L x 21W x 0.8T
Air Filter Longevity:3 month

Filtrete 
21-in W x 21-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter

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for pricing and availability

4.7
2233
Dimensions:20.7L x 20.7W x 0.8T
Air Filter Longevity:3 month

Project Source 
21-in W x 21-in L x 1-in MERV 8 Electrostatic pleated Air Filter

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5.0
6
Dimensions:20.7L x 20.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
21-in W x 21-in L x 1-in MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter

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4.5
369
Dimensions:21L x 21W x 0.8T
Air Filter Longevity:3 month

Filtrete 
21-in W x 21-in L x 1-in MERV 5 Basic Pleated Pleated Air Filter

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for pricing and availability

4.3
1046
Dimensions:20.7L x 20.7W x 0.8T
Air Filter Longevity:3 month