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Filtrete 18-in W x 18-in L x 1-in MERV 5 Basic Pleated Air Filter (3-Pack) in the Air Filters department at Lowes.com
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Filtrete 18-in W x 18-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic Pleated Air Filter (2-Pack) in the Air Filters department at Lowes.com
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HDX 18 in. x 18 in. x 1 in. Superior Pleated Air Filter FPR 9, MERV 12 HDX1P9-011818 - The Home Depot
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Filtrete 18-in W x 25-in L x 1-in MERV 5 Basic Pleated Air Filter in the Air Filters department at Lowes.com
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HDX 18 in. x 18 in. x 1 in. Standard Pleated Furnace Air Filter FPR 5, MERV 8 (3-Pack) HDX3P5-011818 - The Home Depot
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