The FLEX-Drain 2 In. x 3 In. x 4 In. downspout adapter offers polypropylene construction and a flexible design that can bend to fit tight spots and curved spaces. This adapter fits a 2 In. x 3 In. downspout on one end, and 3 In. or 4 In. corrugated pipe or 4 In. PVC piping on the other end. FLEX-Drain helps you get the job done faster and easier, with professional grade durability and more versatility than traditional corrugated pipe. Flexible and expandable, FLEX-Drain easily bends around any obstacle, holds its shape during installation and with a simple snap, its integrated soil-tight fittings lock securely and stay connected during backfilling. FLEX-Drain is a complete drainage solution system that's widely compatible with virtually all traditional 3 In. and 4 In. corrugated pipe and 4 In. PVC. Technologically superior, it's made with no-break copolymers and exceeds all applicable ASTM standards.