Hvac: What Is This Ducting Called?

[skywalkerOG]

http://invalid.com/u7PwjvJ

pics of what I'm looking for:

they where titled as "10" wide side-facing ducts" however I don't get much on google.

thanks!

 

[LittleDabbie]

Need to upload the files to THIS server.. outside links will show up as invalid.