Enkadrain 3000R subsurface drainage composites feature a polypropylene core, made from 99% recycled, post-industrial. Contribute up to 2 LEED (Leadership in Energy and Environmental Design) program points when used in conjunction with other recycled-content products. Available with a filter fabric on 1 side. Soon offered with fabric on 2 sides and in double-wide rolls. Square, waffle-core configuration remains stiff yet flexible, conforming to any surface profile. Tangled net structure relieves hydrostatic pressure from soils abut-ting below-grade structures. Provides lightweight alternative to traditional sand and gravel drains.