GSRW U350 - Universal Retaining Wall Geogrid - 3' x 50'SRW GSRW U350 Universal Retaining Wall Geogrid 3' x 50' Our Universal Retaining Wall Geogrids high strength polyester yarns are coated with a PVC material and built to resist biological degradation. SRW geogrids can withstand natural chemicals, alkalis, and acids. Our geogrids are the best on the market for soil reinforcement applications such as retaining walls, steep slopes, embankments, sub grade stabilization, and embankments over soft soils and