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The IO HVAC CONTROLS SD-07 is a 7" round auxiliary zone damper. This damper is constructed from galvanized steel and features a single blade with a 24V spring return actuator. It is designed for use in commercial applications and is rated for duct systems less than 1.0" WC.
The SD-07 auxiliary zone damper is suitable for zoning or ventilation needs and can be installed in any position in a properly sized duct.
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