The Wedge dock section is a 45-45-90 triangle frame used to fill open corners, typically on the back side of patio sections. One side of the triangle mounts to the 4' end of the dock frame, while the other side of the triangle mounts to the 8' side rail of the joining frame. The dock wedge section is available in left and right side connections. Choose from our Western Red Cedar or maintenance-free aluminum decking.