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14" X 8" motorized damper - powered open Jackson Systems “D” Jackson Systems “D” Series motorized rectangular zone dampers are designed especially for use in zone control, air inlet, and exhaust air vents, although they may be used to control air flow in any duct system. These dampers are powered open/spring return closed. FEATURES -Heavy-duty extruded aluminum and stainless steel construction for long, corrosion-resistant life. - Dampers have been tested to 250,000 cycles. - Opposed blade damper distributes air evenly over face of grille while reducing noise in the system. - Special windings and heavy-duty steel gearing on the factory-installed motor provide for long life and easy spring close or open operation. - Cross pin drive on the motor shaft provides positive direct drive to damper without a coupling or setscrews, allowing for quick and easy motor change. - Unique individual blade bushings for smoother and quieter operation. Mounting plate provided for slip-in installation in the side of the duct. Designed to work with low-pressure systems up to 0.75” WC Driven by a synchronous type, 2-wire, 10VA, 24 volt motor OPERATION The powered open/spring return closed version is 2-position, 15 seconds open with power on, and 5 seconds spring closed with power off.