Mounting bracket for installation on rafters for side fixing of DEHNcon-H supporting tube (Ø40 mm) or HVI Conductor inside of the supporting tube (Ø50 mm) as well as to attach and fix the supporting tubes and for the sub-roof installation of the HVI Conductor or the HVI light Conductor. Universally adjustable for installation on rafters and a roof inclination of 24°-53°. The bracket for installation on rafters may not be used in case of an on-roof insulation and only conditionally in case of plain tiles.