Because the mount and both ducts are close to a hotend, printing them with ABS is a good choice.
The mount item contains 2 little supports at front - remove them after printing.
To fix ducts to the mount element you will need two screws (about 4x20 mm). To fix the mount to printer itself you can reuse screws from original cooling duct.
For better results you may use a piece of PTFE (teflon) as a hotend shield. It can be bought in small sheets (1 mm thick one is OK). The printed plate template will help you in cutting PTFE properly.