4 Inch Flexible French Drain Pipe with AntiClog Filter Layer, Underground Yard and Garden Drainage Tube, 85m Long

Permeable Drainage Pipe — absorb, filter, and drain in one solution Overview This flexible, spiralreinforced drainage pipe combines a nonwoven filter layer, polyester fiber, and internal steel wire to provide reliable water absorption, filtration, and drainage. It is designed to prevent clogging from debris, resist crushing, and conform to site contours for fast, loweffort installation. Key specifications Material: Nonwoven filter layer, polyester fiber, and steel wire ( carbon steel wire core for tensile and pressure strength) Diameter options: 5 cm (2 in) and 10 cm (4 in) Length: Standard example 85 m (278.9 ft); length can be customized on demand Why you need it Controls surface and subsurface water to prevent saturated, muddy yards, roads, and embankments Filters fine soil and debris while allowing water to pass through and to surrounding soil Durable spiral structure resists crushing and maintains flow even under load Main features 3in1 function: absorbs, filters, and drains water efficiently Nonwoven fabric layer traps sediment and prevents clogging Builtin carbon steel spiral provides tensile and pressure resistance Flexible and impact resistant: bends without breaking for continuous runs around obstacles Fast cutting and laying: reduces installation time and labor Can be connected end to end for extended runs or joined with a PVC pipe (PVC not included) Designed for both vertical and horizontal drainage applications Typical applications Retaining wall drainage: vertical and horizontal placement on the north side or other retaining structures to prevent water buildup Roadway and railway drainage: subgrade, road shoulder, and railbed drainage to improve stability and prevent waterrelated damage Tunnels and underground drainage: soft ground and tunnel lining drainage where filtration and flexibility are required Installation and practical notes The pipe is meant to let water seep into surrounding soil and store water in situ, so connections do not require watertight seals for function You can join two permeable pipes directly or use an external PVC connector (PVC connector not supplied) Easy to cut, bend, and place to match site contours—less measuring and fitting required Color and slight measurement variations may occur due to lighting and manual measurement Material advantage The outer nonwoven filter layer and polyester fiber provide effective filtration, while the internal carbon steel wire delivers strength and good articulation. This combination maintains permeability while preventing sediment intrusion and structural collapse. Ordering options Available lengths can be customized to project requirements. Standard example length is 85 m (278.9 ft). Diameter options are 5 cm (2 in) and 10 cm (4 in). This product is suited for civil and landscaping drainage tasks where filtration, flexibility, and durability are needed to manage water and protect structures.