Color coding
In the element drawings, the positioning of the boxes on the front side or back side of the element is marked with either a white or black box symbol. In the installation situation (cable/wire pullthrough) there has been difficulty in knowing which side of the element the piping leads to, especially when there are many boxes and box combinations in the element.
Color-coded end pieces can be used to indicate which side the piping leads to when color-coded products are used in the element factory. Color coding can also be used in on-site casting for the same purpose.