Cot PEHD Rainplus 50/45° Cot PEHD Rainplus 50/45° is a high-density polyethylene (HDPE) drain pipe with a unique design that helps to capture and funnel water away from foundations and other structures. The pipe features a 50/45° angle at the bottom, which helps to promote better drainage. Additionally, the pipe is also designed to help prevent clogging due to its perforated design. The pipe is lightweight and flexible, making it easy to install, and it is corrosion and rust-resistant to ensure long-lasting use.