There are newer versions of this thing here:

Ender 3 & CR10 version    https://www.thingiverse.com/thing:4943125
Ender 5 version    https://www.thingiverse.com/thing:4945681
Background
Although I really enjoy my Hydra Fan Duct design both my  Ender 3 Pros have exclusively 4010 ducts with a Bowden system. I therefore thought they may be better suited with a more Compact Lightweight system that provides some expansion\versatility but keeps the base unit to a reasonable minimum. I have since expanded the concept to use 5015 fans and the ability to mount with the 5015 fans to an  Ender 5 (the X axis timing belt needs to be replaced to achieve this on the  Ender 5).
Manta Compact Duct System
There is a newer version of this thing here: https://www.thingiverse.com/thing:4943125
The Manta compact duct system is based on a 3010 Hot End Fan(similar to the V6). For this reason it also incorporated standard and Volcano versions of the V6.
The 3010 fan being smaller can be a little more noisy ( I have used reasonable quality…