ClarkDietrichs E-Flange Control Joint has flanges with more open triangles combined with a raised rib in the center of each flange improving plaster embedment by 80% and provides for easy lath tying to the flange itself. This E-Flange allows for more stucco mix to flow through the flange, providing a more thorough and consistent embedment. The unique E-Flange shape also allows for quick and easy tying of lath and other accessories.