Cheap insurance for expensive components. Just be sure to remove the bottom quarter to third of the baffle.
from Baltimore, MD
Love these cause they are for my door speakers so water that leaks in the door frame will not touch the speakers
I put these in my front doors when I installed new speakers. Don't know how effective they are, but I think that the little extra protection is peace of mind for me. Super easy to install. I had ZERO problems with this product.
from Havelock nc
Reduced the rattle in my doors from the speakers
Low cost. I used in my Silverado due to moisture getting on back side of speakers. Easy to install. Can't confirm if it helps sound any more, but I used for protection.