Large-sized surface/flush mounting housing 120×120 mm, for the installation directly on shielding products or for clamping the grounding tapes, or use with shielding paints (with addition of AF3 fibre additive – NO grounding tapes will then be needed). Due to the large surface preferably used in facade and roof areas. With three clamping points for grounding tapes for all surfaces with shielding paint, shielding mesh, shielding plaster, reinforcement fabric. Usage on the interior as well as the exterior (additional seal necessary). One piece is needed per treated surface area. Flush mounted with a height of 11 mm is thinner than a drywall construction board.