1'' deep adapters assure no clearance problems | Utilizes existing vehicle mounting points, and requires no cutting or drilling | Manufactured with elliptical cutouts to house 6x9" aftermarket speakers
1/4" thick adapters assure no clearance problems | Utilizes existing vehicle mounting points, and requires no cutting or drilling | Manufactured with 4 3/4"" round cutouts to house most 5 1/4" aftermarket speakers