Carrozzeria metal inner baffle. Removed from an Aqua. I think it can be used for most Toyota cars, but I don't know the compatibility. It is likely a Carrozzeria UD-K611 inner baffle for car audio. This is a part to improve the sound quality of speakers. Product name: Carrozzeria High-Quality Inner Baffle Professional Package UD-K611 Main use: Used when installing speakers in car doors, it improves sound quality by increasing the strength of the door's steel plate and suppressing resonance. Features: Hybrid construction combining an aluminum die-cast base and a steel anchor plate to suppress unwanted vibrations.