A retaining wall ‘SuperPost_100C’ refers to a type of post specifically designed for use in SuperSleeper retaining wall systems. Made of composite materials, and they have a distinctive C-shaped profile. SuperPost_100C are installed vertically into the ground typically used for corners, change of directions or end posts. They serve as the primary structural support for the wall, helping to stabilise the retaining wall sleepers and prevent soil erosion or collapse.