Photo 1 of Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413, 2PK

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Photo 1 of Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413, 2PKPhoto 2 of Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413, 2PKPhoto 3 of Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413, 2PK