NO MORE DRIP, DRIP, DRIP!!
They take the "DRIP, DRIP"
noise out of your downspout. This noise is produced by water as it falls (or drips) and hits the elbow below.
The matted cushion strip absorbs the drip noise.
They are installed by removing the bottom elbow and placing the Silencer clips onto the back top of the elbow and strips down into the elbow.
When the elbow is reinstalled the Silencer is secured.