This is a Fan Duct for the Creality CR5 Pro 3D Printer. The original Fan Duct for the Creality CR5 Pro supplier by Creality is 3D printed. It will easily warp and interfere with prints after some exposure to heat froom the heated bed. It will also tend to snap easily due to the weak mounting points. This Fan Duct is an improved version where it has a thicker mounting point.You may 3D Print with ABS for better temperature tolerance at the orientation as shown in the pictures.