Photo 1 of Nordic Pure 20x20x4 (19_1/2 x 19_1/2 x 3_5/8) Pleated Air Filter MERV 12 Plus Carbon 2 Pack

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Photo 1 of Nordic Pure 20x20x4 (19_1/2 x 19_1/2 x 3_5/8) Pleated Air Filter MERV 12 Plus Carbon 2 Pack Photo 2 of Nordic Pure 20x20x4 (19_1/2 x 19_1/2 x 3_5/8) Pleated Air Filter MERV 12 Plus Carbon 2 Pack Photo 3 of Nordic Pure 20x20x4 (19_1/2 x 19_1/2 x 3_5/8) Pleated Air Filter MERV 12 Plus Carbon 2 Pack