Manufactured from 100% recycled plastic by HAHN Plastics North America Ltd and backed by a 20-yr manufacturer's warranty, these heavy duty ground grids are far superior to the concrete equivalent, as they are lighter, easier to install, and do not crack or break like concrete. Designed with a stabilizing interlocking systems, heavy duty ground grids are the perfect solution for driveways, parking areas and outdoor spaces capable of handling the heaviest of loads.