The MiraDRAIN 9800 is a high-performance, high-strength drainage composite consisting of a three-dimensional, high-impact polystyrene core, and a superior, heavy-weight nonwoven filter fabric. The fabric provides unmatched filtration, preventing small particles of soil from clogging the drainage channel while allowing subgrade moisture to pass freely. The filter fabric is bonded to the individual dimples of the molded polystyrene core to minimize fabric intrusion into the flow channels caused by backfill pressure. Its flat side fits directly against wall or deck surfaces making it ideal for planter, green roof and foundation wall applications and serves as a protection course over CCW Waterproofing Membranes. MiraDRAIN 9800 is designed for use in high-flow, high-compressive strength, horizontal and vertical drainage applications where maximum filtration is required for subsurface drainage.