The round and rectangular dampers are designed with a more compact actuator, and are shorter in length. The compact actuator contains a self aligning plastic hub which slips over the shaft but is not clamped to it, reducing the possibility of misalignment and shaft binding. Rectangular dampers now use 45° actuators and blades, the same as round dampers.
- Self aligning shaft and actuator hub requires no adjustment.
- Spring loaded disengagement (quick blade release button) for momentary release of main gear and damper blade.
- Terminals recessed in plastic. No cover removal for wiring.
- Plastic hub protects actuator from condensation.