Interesting Product for Air Duct Zoning

Seen this on ebay, looks like kids water wings LOL!
Took a little while to grasp the concept...Have a look for yourself:

Interesting Product for Air Duct Zoning

Well there is another key component, it turns out...$$$ Aquarium pump and some solenoids mounted in a panel.

FLEXDAMPER AIRZONE SOLENOID PANEL WITH PUMP

It's an idea, but relly, but why not just adjust the registeres to make the rooms all balanced. I replaced the air filter on the air handler with one of the good hepa filters and the fan motor sounded like it had asthma (replaced with good old el cheap O ), can't imagine all the zones with those in and only one register open.

Correct you are, I don't want it either.

Just putting it out there for peoples awareness...some stove fellow may take a fancy to it for a hybrid distribution system.