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12x18x1 (11.5 x 17.5) MERV 8
12x18x1 Air Filter
From $ 53.90
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12x16x1 (11.5 x 15.5) MERV 8
12x16x1 Air Filter
From $ 51.90
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19.5 x 20.5 x 0.75 Non-Standard Air Filter