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DuPont 3 Way Odor Control Carbon Adjustable Air Filter 20"x25". This filter is unique in that can be trimmed to fit most HVAC size needs. - Walmart.com
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Web EcoFilter 14 In. x 20 In. x 1 In. to 20 In. x 25 In. x 1 In. Adjustable MERV 7 Furnace Filter - Bliffert Lumber and Hardware
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WEB 25-in W x 20-in L x 1-in MERV 8 Furnace AC Filter Cut To Fit Air Filter in the Air Filters department at Lowes.com
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