Drain Extender Kit is used when you need to increase the height of a drain for Pavers, Overlays, etc. The Drain Extender Kit is used in many applications to increase the height of an existing drain. Both the top and the bottom pieces of the Drain Extender Kit have slots in them to allow the water to pass through to the existing drain, leaving behind a beautiful new drain. Make sure to use Stegmeier’s Drain Extender Kit on your next remodeling project.