3D Printer ventilation

I just wanted to get this up here asap as it would be months before I could do it properly.

I don't want to breath melted plastic no matter what anyone says.

I know zero about HVAC or ventilation. You might want to google "back pressure" because my set up can barely blow air out the end but it does.

This is a manifold to go from the below 5V USB fan to a PVC pipe. I'll have toget you the size of the pipe. The manifold squeezes nicely into the port on this blower fan.

https://www.amazon.com/gp/product/B012CL2V3I/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I'm designing an inline blower to work with USB 5V case cans to assist this system.

For now be inspired and do with this what you like. I'll try to be of more help later and upload my inline blower design.

Also I'll have to show you what PVC fittings and other HD Junk I used to make the window output adapter.

---UPDATE--

So I upgraded it with these fan used inline with the pipe using an adapter I've u