- Adjustable close position range stops
- Shipped as power closed/spring return open damper.
- Available in 5 to 10" inch, 12, 14, 16, 18, and 20 inch diameter sizes.
- Male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct.
- Rated to operate up to 1 in. wc
- Blade closes off tightly against gasket for minimal leakage.
- Fail-safe, normally open operation
- Simple, easy-to-wire, two-wire installation with a third wire option M4 for LED open only light