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iO HVAC Controls, HD-3224, HD Series 32" x 24" Two-Position Zone Rectangular Damper
Features:
The HD Series dampers are galvanized steel, single-blade dampers with a 24-volt spring return actuator. These dampers are shipped complete and ready for installation. They are rated for duct systems with less than 1.0" WC. The HD Series damper has a simple adjustment for setting the minimum position.
Dimensions:

Dampers are sized width (A) by height (B) with actuator on the (B) dimension. Actual (A) and (B) dimensions are undercut 1/4"
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