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air ducts for heating, ventilating and air conditioning systems. (Pictured above: ToughGard duct board.) FOR ADDITIONAL INFORMATION: PUB. NO. 30-34-006 Ultra*Duct™ GOLD Duct Board with Enhanced Surface Ultra*Duct™ GOLD Duct Board is a rigid board designed for fabrication into supply and return air HVAC duct work. Composed

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