Connects 4 in. corrugated pipe to any 4 in. smooth wall PVC pipe or PVC pop up emitter. 100% HDPE COUPLER - French Drain Man's corrugated to PVC adapter is made from the strongest material on the planet, HDPE with no blown in fillers and no recycled material. WILL NOT CRACK - Not only is HDPE durable, it’s also bendable and flexible for underground drainage where shifting and settling occurs. EASY INSTALLATION - No PVC glue or cement is required. Simply connect one end of the coupler to the corrugated pipe, attach the PVC pipe to the other end, and seal it with PVC tile tape – it’s that easy. 100% LIFETIME GUARANTEE AGAINST BREAKAGE. The French Drain Man HDPE coupler has a lifespan of up to 500 years. We're so confident that it will not crack or break that we are offering a lifetime money back guarantee. MADE IN THE USA , BUILT BY CONTRACTORS - As drainage contractors with 35+ years of experience, we constantly see what’s missing in our industry. Most of our products start with with the simple thought of, “there has to be a better way”. Now French Drain Man is sharing knowledge and experience with homeowners and other contractors so they can be successful in their drainage projects. Dry Fit, NO GLUE! Introducing the ultimate solution for connecting 4 in. corrugated pipe to any 4 in. smooth wall PVC pipe – our HDPE coupler. Built to last, our coupler is made from the strongest material on the planet, HDPE, which boasts a lifespan of up to 500 years. It has a lifetime guarantee not to crack. HDPE doesn’t just have superior strength. Another benefit of using HDPE is that it’s flexible enough to withstand ground settling and shifting with underground buried downspouts. Our coupler is effortless to install and requires no PVC glue or cement. And, because we believe in supporting American-made products, our HDPE coupler is proudly made in the USA. Upgrade your pipe connections with our HDPE coupler and enjoy a durable, long-lasting solution that will stand the test of time.