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Filtrete 20-in W x 20-in L x 1-in MERV 13 1900 MPR Premium Allergen, Bacteria and Virus Electrostatic Pleated Air Filter in the Air Filters department at Lowes.com
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PUREPLUS 1-Stage Whole House Water Filter, with Iron Manganese Reducing Water Filter, for Well Water, 10"x4.5" Universal Housing: Amazon.com: Tools & Home Improvement
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Filtrete 20x20x4 Air Filter, MPR 1550, MERV 12, Healthy Living Ultra Allergen Healthy Living 12-Month Deep-Pleated 4-Inch Air Filters, 4 Filters - Replacement Furnace Filters - Amazon.com
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Tech recommended I get a 4 inch filter, but is the gap on the right too large to be effective? : r/hvacadvice
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Express Water – Activated Carbon Block Replacement Filters – ACB Large Capacity Water Filter – Whole House Filtration – 5 Micron
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