Flex-Drain 53225 Flexible Downspout Extension Adapter, 2 by 3 by 4-Inch, Green (Discontinued by Manufacturer)
The most common drainage issue faced by homeowners is excess water from downspouts and gutters. To drain your downspout away from your home you will need to dig a trench that leads to a dry well, drainage ditch or storm sewer and add 2-inches of crushed stone to the bottom as a base for the entire length of the trench. Next attach this downspout adapter to the downspout—many times the downspout will end in an elbow, you can leave this on or remove it to get an installation that is tighter against the house. Next, expand the pipe to the required length and attach any length of FLEX-Drain pipe to the adapter. It should snap in tightly and will be difficult to remove.  Finally, position the pipe as necessary and cover with 2-inches of crushed stone. Once you have covered the pipe with gravel, you may cover the entire installation with the dirt.  Using no-break copolymers and 100% virgin grade material, FLEX-Drain is made with seamless extrusion technology for enhanced performance and durability. With a simple snap, our integrated, soil-tight fittings lock securely and stay connected during backfilling. FLEX-Drain exceeds all ASTM standards, delivering greater strength and joint integrity than standard corrugated pipe.