I have brought this to me for my VW Golf 4. Plus Alpine speakers, these fit but due to the aspiration behind the speakers do not run purely. Thereupon I tried it yet with another couple other alpine speakers I wanted to obstruct the back in the car all 165mm, but this did not fit. Now who's naturally inventive takes ne file and polishes to make ne small notch so that the whole then adjusts. This is because the upper edge and the very tough and stable plastic.