Dual 40mm Fans to single 40mm

I prefer fangs for cooling, but i did not like the single blower or dual blowers since they are too loud. I've seen dual blowers to a single 40mm fan mount but no dual 40mm fans. Here is my remedy.

I use 40x20 Noctua Fans
https://www.amazon.com/gp/product/B071W93333/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1

You're going to need an M3-0.5 Tap to tap the holes to mount the fans

Screw Sizes:
M3x15 for a 10mm thick fan
M3x25 for a 20mm thick fan

Note: There's a rogue bridge within t