WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Install in the reverse order of removal.
Tightening torque:
13 N.m (1.3 kgf-m, 9.6 ft-lb)
Fig 1: Locating Purge Damper To Purge Damper Bracket And Bolts