FDOT Rip Rap 12"–24" (Limestone) is a large, durable rock that meets Florida Department of Transportation specifications for shoreline protection and erosion control. With stone sizes ranging from 12 to 24 inches, this heavy-duty material is ideal for stabilizing embankments, seawalls, culverts, and drainage channels exposed to strong water flow. Its strength and long-lasting performance make it a trusted choice for large-scale infrastructure and environmental projects