MiraDRAIN® is a high-performance drainage composite consisting of a three-dimensional, high impact, creep resistance polymeric core, and a selection of engineered anti-clogging filter fabric. The filter fabric is factory-bonded on individual dimples of the molded core to minimize fabric intrusion into flow channels caused by backfill pressure. The fabric serves as a filter medium to prevent the passage of soil particles into the core while allowing subgrade water to pass freely.
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