Cold rolled steel part for use in construction work, together with laminated plasterboard and gypsum board products where the frame is not load-bearing. Reinforced profile with special E-shaped geometry that is used in the vertical perimeter frame of the Pladur CH System. It has a nominal width of 90 mm, with a height of 25/35 mm. It is made of 0.7-mm thick Z140 galvanised steel plate.