Photo 1 of Allergen Defense Red Micro Pleated Air Filter, 3 Months, Single Pack, 18x20x1-In.

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Photo 1 of Allergen Defense Red Micro Pleated Air Filter, 3 Months, Single Pack, 18x20x1-In. Photo 2 of Allergen Defense Red Micro Pleated Air Filter, 3 Months, Single Pack, 18x20x1-In.