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Amazon.com: Filterbuy 18x24x1 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 17.38 x 23.38 x 0.75 Inches) : Tools & Home Improvement
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Filtrete 18-in W x 24-in L x 1-in MERV 1 Basic Flat Air Filter (2-Pack) in the Air Filters department at Lowes.com
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HDX 18 in. x 24 in. x 1 in. Standard Pleated Air Filter FPR 5, MERV 8 HDX1P5-011824 - The Home Depot
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Filtrete 18-in W x 24-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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