Sharkoon SHARK Blades RGB Fan Gap filler

Hi all,

I got new Case Sharkoon Pure Steel RGB and the included fans have ~2.5mm gap so the static pressure is poor.
I have decided to design a ring to attach on the fan to close the gap to improve the static pressure and I do see a great improvement- did any one else tried it too?
Ring OD:105.5mm
Ring ID:102.5
Fan frame ID is 106mm!.

on my Ender 3 it's perfect fit, try and test on your printer and use scaling if nessecery.
please place your print head start point like in the picture to hide seam!