Mounting bracket for easy and space-saving installation of the connection boxes in parapet ducts to comply with the bending radii required for copper and fiber optic data cables. The brackets are also available with a plug-in separating shell to separate them from parts carrying mains voltage. Support rail fastening, horizontal 55.0 mm, compatible with: OBO Rehau Signa Base 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