External PCI bay extractor for ATX case

Allows you to cool passive PCIe GPUs in workstation cases.
Noise test video: http://youtu.be/V4w5BXtjZpY

## Intended for system testing purposes only.

Designed and tested on HP Z800 series workstations, but should fit all full size ATX cases with recessed PCI bays.

Extracts up to 2x double wide passive GPUs (installed adjacent to each other). See instructions for suggested fans.

Things you will need besides printed parts:
* Approx 40cm Neoprene (or other closed pore) foam strip,