Advanced Drainage Systems is the world's largest producer of corrugated HDPE pipe and related drainage products. ADS serves the storm and waste water industry through a global network of 56 domestic and international manufacturing plants and 27 distribution centers. In addition to its flagship N-12 pipe, the company offers a complete line of fittings and other accessories including, nyloplast drainage structures and various geotextiles. Molded Adapter joins square downspout to 4 inch drainage pipe. HDPE material is strong, economical and resists rusting and corrosion. Snap joint fits inside 4 inch round pipe to create a tight fit. Non-PressurePrevents pooling and foundation damage caused by roof run-offIdeal for drainage and waste managementDrain pipe snaps into adapter for a secure fitJoins 4 in. x 3 in. downspout to 4 in. corrugated drain pipe