Lower part for an installation duct

摘要

A lower part for an installation duct, in particular a wall duct, is described which consists of a sheet metal profile (1) having a C-shaped cross-section on which an assembly rail (6) extending over the length of the profile and likewise having a C-shaped profile is mounted for securing installation apparatus. This assembly rail (6) has a novel structure in that it consists of strip-shaped bars (7) which are cut out of the base wall (2) in pairs arranged opposite each other in sections and which are each shaped to form a leg of the C-shaped profile of the assembly rail (6).