Modular design permits easy assembly in groups of varying sizes, Mounting panels available in 1, 3, and 6 fixed position models, Designed for mounting in 6 different panel thicknesses: 0.06\ (1.57mm) 0.09\ (2.36mm) 0.13\ (3.17mm) 0.19\ (4.75mm) 0.25\ (6.35mm) 0.38\ (9.52mm)