Product HighlightsThe model PRD-RD pressure regulating dampers is a single blade round barometric damper assembly with a counter balanced weighted arm. The barometric by-pass damper is an economical way to manage airflow when zone dampers close. Damper adjustment is achieved by off-setting the hex shaped arm, securing weight #1 towards the bottom of that arm and moving the extra weight(s) (optional) up or down the arm, until the correct bypass flow is achieved.
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Weight 8.00 Pounds Length 14.00 Inches Width 16.00 Inches Height 14.00 Inches Country of Origin USA Brand EWC Controls Galvanized Yes Damper Type Barometric Bypass Diameter 12" Color Silver Composition Steel Finish Galvanized Gauge 24 GA Maximum Temperature 185°F (85°C) Shape Round Size 12" Warranty Offered Yes UL Listed No UL Recognized No
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