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18x30x1 MERV 11 ( MPR 1000, FPR 7-8 ) Pleated 1" Air Filters for AC and Furnace. 4 PACK. Exact Size: 17-1/2 x 29-1/2 x 3/4 - Walmart.com
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Filtrete 20-in W x 20-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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