No support.
PETG
2 Layer Hight
The author remixed this model.
In this scenario, this fan duct is redesigned for All hotend metal.
See Instructions below
POLISI3D All Metal Bimetal Heatbreak Copper Titanium TC4 Throat High Temperature for Creality 3D Printer CR10 V3 S4 S5 Ender 3 V2 Ender3 pro Ender 5 CS3 Hotend Upgrade
Creality Official 1 Meter Capricorn Teflon Tube PTFE Bowden Tubing 1.75mm Filament, Low Friction for Ender 3/3 Pro/3 V2 Ender 3 Neo/3 V2 Neo/3 Max Neo Ender 5/5 Pro Ender 5 S1 CR-10 CR-6 SE 3D Printer
Upgrade High Temperature Nickel Plated Copper Heater Block Compatible with Swiss CR10S PRO CR10 All Metal Hotend Ender 3 V2 Pro Ender5 Plus Parts 3D Printer
24v 5015 Blower Fan 3D Printer for Sunon MF50152VX-1L01C-Q99 MF50152VX-1L01C-s99 24VDC 1.95W PWM Cooling Fan
For more information see pics for details.