Product HighlightsThis non-insulated flexible air duct has a multi-ply design of metabolized polyester and aluminum/polyester laminate.
- Steel wire support
- 1" Pitch
- UL® sticker every 10 feet
California residents: see Proposition 65 Warning
Weight 1.95 Pounds Length 300.00 Inches Width 4.00 Inches Height 4.00 Inches Country of Origin USA Brand Builder's Best Adjustable Yes Color Silver Composition Aluminum Compressed Yes Duct Diameter 4" Duct Size 4" x 25'
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