Designed for use with the Negative Air Machine model # 6560
High quality filter restores negative air machines to full efficiency
Replace regularly to ensure maximum performance
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Merchandise may be returned within 30 days of product shipment date, written Authorization must be requested by Customer Service. No returns accepted without prior authorization. Customer is responsible for return freight. All merchandise returned is subject to a minimum 25% restock fee. All merchandise returned must be in original unopened containers and must be in good, saleable condition.