You’ve stumbled upon the Uniform Flow Ovoid (U.F.O.) Duct, A.K.A. (also known as) the Uninhibited Air Perimeter (U.A.P.) Duct; a high performance radial duct designed in secret for the FLSUN T1. May or may not contain unknown biologics.

Made for NeedItMakeIt's T1 Duct Contest, go check out how it did!