AC return grill

[Noah Genda]

I have a 2001 3500 SCR and am looking for a pic of the retaining clips/hardware that holds the grill into the frame. Mine are missing. It's the vertical grill, low on the wall between the aft cabin door and the stairs. Thanks in advance for any help or pics!

[All Summer Long II]

Mine kinda holds itself in place with a filter screen behind it overlapping on the top and bottom. Has never fallen out.