To seamlessly integrate the heroal VS Z sun protection sys. into tran.-mull. curtain walls, e.g. heroal C 50, we developed the heroal VS Z CS semi-integrated with heroal GR 25 guide rail. The system can be front-mounted on conventional transom-mullion systems with a view width of at least 50 mm as a using standard sun protection bolts. The heroal VS Z CS semi-integrated uses an integration profile as the mounting base that can be fabricated with the curtain wall transoms – saving time on the construction site. heroal VS Z CS semi-integrated is installed near the curtain wall for wind-resistance up to 145 km/h.