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20 x 20 x 1 4-Pack Air Filters & Accessories

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Filtrete 
20 x 20 x 1 MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter 4 -Pack

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4.7
12858
Dimensions:19.6L x 19.6W x 0.8T
Air Filter Longevity:3 month

Filtrete 
 20x20x1 MERV 13 AC Furnace Air Filter - 4-Pack Premium Allergen and Virus Protection

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Dimensions:19.7L x 20W x 19.7T
Air Filter Longevity:3 month