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Mapedrain 40

High-Strength, Extra High-Flow, Prefabricated Drainage Composite

Mapedrain 40 is a high-strength, three-dimensional drainage composite. It consists of a high-performance, heavyweight nonwoven filter fabric bonded to individual dimples of a molded polypropylene core, minimizing fabric intrusion into the drainage channels caused by overburden pressure. Mapedrain 40’s 8-ounce (227-gram) nonwoven fabric provides superior filtration. This allows water to pass freely into the drainage core, which provides hydrostatic relief while preventing the passage of soil or sand particles that might clog the core.