not sure but they look good
2008 Chevrolet Silverado
Crutchfield Customer Review (What's this?)
Put these in with my new speakers, they look good but not getting much bass out of the speakers, might just be speakers.
Pros: Seem ok and wouldn't install a new set of speakers w/o them for the cost and effort.
Cons: Hope the limited airflow isn't hindering the bass performance.