Product HighlightsThese dampers feature 1/4" (6.4 mm) bearings which allows for bearing holes to be made in round duct with the use of a scratch awl. To install, simply squeeze the pipe so that it is oval shaped, insert the damper into pre-punched bearing hole and the pipe will spring back to round when released, and secure with the wing nut(s) provided. The damper may be adjusted with a screwdriver.
Weight 32.39 Pounds Length 13.75 Inches Width 12.25 Inches Height 9.50 Inches Country of Origin USA Brand Malco Color Gray Size 8" Composition Galvanized Steel Galvanized Yes Gauge 28 GA Approvals HVAC Warranty Offered Yes Shape Round Damper Type Round 8 inch Finish Steel Package Quantity 100 Overall Length 13.75" SAE or Metric SAE
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