This category covers all the square cable systems in various sizes and in limited to bigger extensions for medium-sized climbers. (For even larger fields, look to system 8030). All square systems can be adapted to the circumstances and can also be installed as a rectangle ('standing' or 'lying'). They are therefore very flexible and ideal for many plants, other than vigorous twiners like wisteria. With clematis and annuals, the grid spaces ('mesh' size), however, should remain less than 30 cm for an optimal coverage. You can learn more in the section on climbing plants. In a following section, you will learn at what mesh size cross clamps instead of cross mounts are used. To find more tips on choosing an appropriate system, look to our section on planning.