Glasforms’ fiberglass boundary/survey markers are the ideal and economical solution to mark hiking trails, boundaries, or surveyed property. Installing is fast and easy in most soils and usually takes less than a minute. They are extremely weather resistant and able to maintain their flexibility and withstand temperatures as low as -80 to as high as 160 degrees Fahrenheit. Our double rib design provides extra support and easy installation of bolted signs. The Boundary/Survey markers are available in a variety of colors and lengths with or without pre-applied standard or custom decals.