Recent content by prometheusdt

So in the first two pictures, which one is open and which one is closed? The damper is right in the middle of the elbow, so if the damper is on the same plane as the lever, it will still allow air to flow through regardless of position. As for the last two pictures, which one is open and which...

https://imgur.com/a/snDUsSn I'm a first time home owner, and I'm trying to figure out how these dampers work. The above link are the pictures to my two ducts (2nd floor and main floor/basement). I know that when the lever is parallel to the airflow, the duct is supposed to be open, and when...