The Model RSD is a round 1-blade damper constructed from heavy 24 ga galvanized steel. The 24 V motor actuator is direct coupled to the drive shaft. It is power closed/spring open (standard). The damper can be field reversed to a power open/spring closed model. The RSD damper may be used with either flexible or rigid ductwork. The RSD has a double layered blade design with an integrated cellular foam gasket to provide a seal when the damper is in the closed position. The RSD also has a Travel Limiter to prevent the damper from closing 100% if your application requires.

EWC® Ultra-Zone Motorized Damper, Series: RSD, 12 in Size, Single Blade, 24 ga Steel, Galvanized, Power Closed, Spring Open Motor, Motor Specification: 24 V, Round, 14 in L

• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/EWC_RSD12_Specification_Sheet.pdf