Dual duct with single fan for TAZ 5

The original TAZ 5 fan duct cools only one side of your print. This is a problem with small parts where one side is in the shadow of the airstream due to the nozzle, resulting in a molten look.
There are a few designs out there to resolve that problem, most of them using a second fan with a mirrored second fan duct.

I wanted to have something more easy, without the need of a second fan, splicing the fan wires together, source heat inserts etc. The original fan is more than enough for two out