Advanced Drainage Systems is the world'Â€Â™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. The 36 in. x 1500 ft. Septic Fabric Drain Guard helps prevent the migration of soil into perforated pipes and leaching chambers (pipes and leaching chambers not included). Color: Black.