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The 1B1 Geocomposite Drain combines a high-density (HDPE) net drainage core with a non-woven polypropylene (PP) geotextile filter/separator bonded to both sides. This net drainage geocomposite utilizes a unique geotextile filter, designed specifically for drainage applications, known for its high tensile strength and ability to prevent soil from entering the drainage core. It maintains effective flow even under heavy loads, thanks to the HDPE nets used in its construction. The product's roll size is 2m x 25m.. TCS Geotechnics 1B1 Geocomposite Drain - 2000mm x 25m Geotextile