Cold-formed sheet steel profiles with a C-shaped cross-section in accordance with EN 14195, corrosion protection C5M, as a stand profile for AQUAPANEL® / Drystar walls. H-shaped punchings are provided for the passage of electrical cables. H-shaped punchings are provided for the passage of electrical cables. The corrosivity categories C3 and C5-M refer to the classification in accordance with DIN EN ISO 12944-2:1998-07 and DIN 55634-1:2018-03.