Chain-link fence has four elements: fabric, framework, fittings and gates. How you combine them makes all the difference. Each of these components are available in a range of weights (gauges) and types of protective coatings. Providers can mix and match components in an effort to shave costs or differentiate their product. My minimum recommendations will typically follow the minimum practices defined by the American Society for Testing and Materials (ASTM). The most common coating is zinc (galvanized), but you'll also find chain-link components with vinyl or polyester color coatings in addition to zinc. These color treatments enhance landscaping and blend naturally with trees, shrubs and bushes. They'll also give you even more protection against corrosion or rust.