Hybrid annular fan duct

I wanted to eliminate any barriers to airflow in murat's design, and since I've been using gijs fan duct I figured a combination of the two would be a good idea.

WARNING: This thing does get hot enough to warp if made out of PLA, but I believe that if made out of ABS it can be quite effective. Haven't tried that yet but it's on the todo list. Despite being flexible during printing the fan duct seems to hold up. We'll see how long until creep makes it useless.

UPDATE: Printed in ABS, actual