Crutchfield Customer Review (What's this?)
Used as the top half for custom 6x9 oval shaped (homemade) sealed front cabinets. Made mounts and fit to the underside front of my bucket seats. Filled with insulation for richer sound since the volume of my cabinets / rpods was on the small side of optimal.
Pros: Product is made from tough material, nice and thick.
Cons: Wish they sold a bottom half that would fit a large magnet 6x9. I made my own and covered it with carpet. Expensive.