A: Removal

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Open the front hood.
Remove screws (A) and clips (B), and remove the hood duct assembly.

Fig 1: Locating Hood Duct Assembly Mounting Screws And Clips
Courtesy of SUBARU OF AMERICA, INC.
Remove the nuts (A) and clips (B), and remove the front hood grille.

Fig 2: Locating Front Hood Grille Mounting Nuts And Clips
Courtesy of SUBARU OF AMERICA, INC.