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Filtrete 16 In. x 25 In. x 1 In. 300 MPR Basic Dust & Lint Furnace Filter, MERV 5 - Thomas Do-it Center
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Filtrete 20-in W x 25-in L x 4-in MERV 12 1550 MPR Allergen, Bacteria and Virus Electrostatic Pleated Air Filter at Lowes.com
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Filtrete 20x25x4, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 2-Pack (Actual 19.88 x 24.63 x 4.31) - Amazon.com
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