cigarguy
Active member
Just bought a 72 with ram air. The plenum has no actuators or flappers in the ducts. There's no penetrations on the underside of the ducts where the actuators would have been either.
So my question is, how important are the flapper/actuators? If the vents are open all the time, isn't the air cleaner getting the same amount of respiration?
So my question is, how important are the flapper/actuators? If the vents are open all the time, isn't the air cleaner getting the same amount of respiration?