The TNi-LC3 is a linking bracket that enables the user to attach two TNi-4030 speaker units together during installation. The LC3 can be adjusted to tilt the lower TNi-4030 to the desired angle and then is fixed by a locking screw.The TNi-LC3 is a linking bracket that enables the user to attach two TNi-4030 speaker units together during installation. The LC3 can be adjusted to tilt the lower TNi-4030 to the desired angle and then is fixed by a locking screw.