Advanced design for superior performance; solid pipe helps move water to a drain from your downspout diverter, rain gutter and more * Exceeds the following ASTM standards, flex-drain outperforms the leading brand of corrugated pipe with brittleness, stiffness, and joint integrity * Engineered to outperform, installs faster, requires 1/5th the storage and transport space, and perforated pipe has 14 percent better flow rate * Outperforms in freeze and thaw conditions, also has 30-percent higher load-bearing rating from our patented peak and valley design * Solid drain-pipe expands in length from 2 to 8-feet - compatible with most traditional 3-inches and 4-inches corrugated pipe and 4-inches pvc * Advanced design for superior performance - outperforms in freeze and thaw conditions, also has 30-percent higher load-bearing rating from our patented peak and valley design * Engineered to outperform - Installs faster, requires 1/5th the storage and transport space, and perforated pipe has 14% better flow rate * Exceeds the following astm standards - flex-drain outperforms the leading brand of corrugated pipe with brittleness, stiffness, and joint integrity * Solid drain-pipe expands in length from 2 to 8-feet - compatible with most traditional 3-inch and 4-inch corrugated pipe and 4-inch pvc * Solid pipe helps move water to a drain from your downspout diverter, rain gutter, and more