Product HighlightsThermo-Headers™ are made from Thermopan® and designed for tight sealing air blocks by capping off the return air run. This model is pre-cut and sorted to fit easily between I-joists.
California residents: see Proposition 65 Warning
Weight 0.29 Pounds Length 20.00 Inches Width 16.00 Inches Height 2.00 Inches Country of Origin USA Brand Thermo Galvanized No Application Ducting Color Silver Composition Fiberglass Finish Aluminum Insulated Yes Size 19" x 16" x 1/8"
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