Flexodrain and Drainomat are lightweight, high strength, high impact polypropylene modular drainage cell whichare especially designed for sub surface drainage and waterproofing membrane protection. Draincells offerarchitects and developers extensive design fixibility and have a wide range of applications in the landscape,building and construction industries. These Draincells are easy to install by interlocking them horizontally andvertically. Drain cell also act as a protection layer over waterproofing membrane, and also creates a thermalinsulation barrier. The open surface design and high internal void volume enables the rapid capture and transportof high water volumes.