Capture and redirect adjacent groundwater to prevent saturation along foundations, surface flooding in the yard, and other costly water damage with the EZflow® Gravel-Free French Drain System. An alternative to traditional gravel-filled French Drain systems, the EZflow French Drain is easier to install and has a 30% better flow rate. Bundle is 7 in. dia. X 10 ft. long with a 3 in. single-wall corrugated pipe surrounded by Poly-Rock™, all encased in a black geotextile mesh sleeve.