Ventilation channel is constructed from individual elements, each of panels connected via screws and nuts, and overlapping webs and edge sections

摘要

The ventilation channels consists of a number of connected elements. The elements contain a number of panels (1-4) connected to each other along their longitudinal edges (8), which are parallel to the channel axis, via connection parts (14), e.g. screws with nuts. One of the panels has an angled web (10) to accommodate the connection parts, and the connected panel has an edge section (12), partially overlapping the web.