Fiesta side air vents need replacing

[cdafam]

Hi all

Just wanted to know where I could get a spare new side air vent. Magically somehow, mine was able to snap. The thing that snapped was the hinge of the arm which pulls both flaps up or down together. Now only one half of it opens (it's really flimsy plastic by the way).

Refer to: http://www.fordmanuals.org/page-428.html

Would this be covered under warranty? And if not, just need confirmation that it's a simply prising out of the current vent and to clip in the new one?

Thanks guys

Andrew