I remixed this ( https://www.thingiverse.com/thing:4147944) just to fit the vent screws. I elongated in Fusion 360 the bracket parts by 1,1 mm and fits perfectly on my Ender 3 pro (purcheased il June 2020).
Thanks Chris_Neale for the original content!
Cool_Ring_V2_v2.stl | 434.9KB |