Polylok's 4" down spout adapters allows you to transition from a 3"x4" down spouts to 4" SCH 40, 4" SDR 35, or 4" corrugated pipe.
This adapter will connect directly to SCH 40, SDR 35, or corrugated pipe to transition downspout flows into the drainage system. The Downspout Adapter is available in white and made of heavy duty polypropylene.