Tropical filter Add-on for the 600mm replica of the Supermarine Spitfire MkIX created by 3D Aeroworks.
https://cults3d.com/en/3d-model/various/supermarine-spitire-mk-ix-600mm
https://www.rc3dmarket.com/supermarine-spitfire-mk-ix-v3-1
Simply print in LW-PLA along with the other parts and after assembly, simply slide in the new air scoop over the existing one located under side the fuselage at the leading edge.