Simple Print cooler

There are a lot of part cooler designs out there but most I came across were with some major cyclic shortcomings.
Like:
1. Some are brilliant/effective designs but they are complicated and need cooling and supports to prints.
2. Others are simple to print but ineffective in cooling the part from all directions. (or end up de-stabilizing the hotend PIDs by blowing air into the nozzle)

I set out to correct it for my own use and found this design to be extremely effective and hence posting it back to the community

This is a simple part cooling duct. Attention is paid to:
1. make it easy to print without support or cooling enabled.
2. Easy to assemble and mount without complicated dependencies.
3. Very effective part-cooling
4. Avoid blowing air onto the hotend (nozzle/heater-block)

The part is printed as 3 sub-parts.