![](/images/EcatModel/OBD1240.png)
The OBD1240 is a steel opposed blade damper operated by a flat-head screwdriver. This damper attaches directly to the neck of our 1240 series diffusers, and is useful for air balancing.
- Opposed Blade Damper for 1240, 51240 and 1240P Series
- Steel Construction
- Standard Finish is Mill