Invisible Structures, Inc

Since 1982, Invisible Structures, Inc. has manufactured innovative products that both protect and enhance the environment. ISI's product line filter pollutants, reduce stormwater run-off, reduce non-point source pollution, provide urban heat island mitigation, control erosion and soil migration, reduce site disturbance and water use, recharge groundwater and more. The finest line of porous pavers, underground retention ponds, erosion control systems, and high performance drainage systems are all made from 100% recycled plastic.