It's 4 1/2 inches tall in the picture. It's plastic and I feel sure it came off of something in the cabin, not in the engine compartment.How big is it for scale?
It looks like an air duct part.
+1It looks like an air duct part.
That makes sense. Can you tell me where it's likely to be located? Driver's side, passenger side, center of dash?+1
Crawl under the dash and see if your floor vent duct is missing. If not, check under the chairs for the rear floor vents.