HydraBarrier Link Ultra - Link for Connecting Two HydraBarrier Ultra's Allowing for the Creation of Barriers of Unlimited Length THIS IS FOR HYDRBARRIER ULTRA (6" high) PRODUCTS Easy to use adapter for connecting two or more HydraBarrier Ultra's (6" High) The Easiest Way to Build Longer Barriers -- Link HydraBarrier Ultra's to cover larger areas Protect homes and backyards with seamless protection Create the barrier that is right for your use  small or large!