Mounting bracket for easy and space-saving installation of the junction boxes in parapet ducts to comply with the bending radii required for copper and fiber optic data cables. Mounting rail fastening, horizontal 52.0 mm, compatible with: Niedax series GAU 110 and DAU 170 and comparable manufacturers, variants: 50.0 mm white, 50.0 mm white with separating shell, 52.0 mm black, 52.0 mm black with separating shell, 55.0 mm black, 55.0 mm black with separating shell