Prusa I3 Mk3 Single Blower Fan Cooling Shroud with Rear Cooling

I tried other cooling shrouds and decided to create my own. from what I have read about cooling freshly printed filament and from some previous knowledge on air cooling dynamics, I created this cooling shroud that blows are in a consistent solid stream across the nozzle about the width of the hot end. By keeping the air flow constantly moving passed there is no stagnate air hanging around so in theory the heat is transferred from the filament more efficiently.

Other shrouds I have tried blow