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. The BioDiffuser plastic leaching chamber is a gravel-less alternative for on-site septic leach field systems. The design objective is to provide maximum infiltrative surface area while allowing effluent to flow in all directions. This has been achieved by combining the traditional, open bottom with a series of louvers along the sides. The louvers are designed to allow effluent to pass into the backfill while preventing the backfill from migrating into the chamber. Color: black.