Butterfly Dampers
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              Item# Size Material Type Order By Outer
            Dimensions            		 Color Price Add to Cart
            Handua 10" [Neck Size] Steel Butterfly Damper for Round Ceiling Air Supply Diffuser - Black | Outer Diameter: 11-1/2" 410102-1 10" Neck Steel 11-1/2" Black $24.83
            Handua 8" [Neck Size] Steel Butterfly Damper for Round Ceiling Air Supply Diffuser - Black | Outer Diameter: 9-1/2" 410102-4 8" Neck Steel 9-1/2" Gray $21.15
            Fits 6 Inch Neck Air Duct | Steel Butterfly Damper by Handua | For Round Ceiling Air Supply Diffuser with Plastic Key-Handle | Brown | Outer Dimension: 7-1/2" 410202-1 6" Neck Steel Gray $19.41
            Handua 12" [Neck Size] Steel Butterfly Damper for Round Ceiling Air Supply Diffuser - Black | Outer Diameter: 13-1/2" 410102-2 12" Neck Steel 13-1/2" Gray $27.89