EDIT: V2 has a backpack for housing a motor controller board with dimensions 76x44x26mm
Another fan multiplier shroud with legs, this time built around a 545 DC motor, printed fan blades and housing
Outer shroud and ducted housing are intended to be joined with glue or small amount of silicone
https://www.aliexpress.com/item/1005003344408103.html?spm=a2g0o.order_list.order_list_main.5.a5b11802l5HjkR
The author marked this model as their own original creation.