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Your cart is empty.Flex-drain flexible/expandable landscaping drain pipe, perforated, 25-foot a pipe with spaced slits, appropriate for ground water drainage french drains, dispersing water from flower beds in applications where surrounding soil is coarse enough not to pose a clogging threat and/or surrounding debris is minimal. Works effortlessly with our complete system of connectors, couplers and adaptors. Exceeds all applicable astm standards. Made with no-break copolymers for professional grade strength and integrity. Proprietary peak and valley design offers greater surface area and a 30-percent higher load-bearing rating than standard corrugated pipe. Flex-drain is compatible with virtually all traditional 3-in. and 4-in. corrugated pipe and 4-in. PVC.Features. Pipe unfolds and expands from 2 to 25-feet. Perforated pipe is for ground water drainage French drains, dispersing water from flower beds where soil is coarse. Exceeds all applicable ASTM Standards. Compatible with most traditional 3-in. and 4-in. corrugated pipe and 4 in. PVC. 30-Percent higher load-bearing rating than standard corrugated pipe. Size - 4 in. x 25 ft.