The file 'Fan Inlet 40×40 Mm For Zabana’s Leapfrog Creatr Nozzle Cooling System V2 3D Printer Model' is (STL) file type, size is 112.9KB.
This is a fan inlet for the original 40x40 mm fan from Leapfrog. On a single extruder variant you can take the second fan and use that one.