Advanced Drainage Systems, Inc. (ADS) 4 in. x 100 ft. Singlewall Perforated Drain Pipe with Filter Sock provides superior strength while its high density polyethylene (HDPE) construction allows the corrugated pipe to be a flexible, light weight solution for your outdoor drainage project. The pipe can be connected using either a variety of 4 in. singlewall fittings including tees, wyes, elbows, or couplers. This ADS perforated singlewall pipe with filter sock is designed with fine cut slots to allow water to enter the pipe and be conveyed to an outlet, and the nylon sock adds an extra layer of protection to prevent sediment infiltration while still allowing the water to flow through.