Wall e.g. side wall, inspection opening closing device for building, has inspection cover and outer frame connected with each other by metal screw connections that are arranged such that they are provided before wall assembling device

摘要

The device has an air duct (1) with an outer frame that is fixed on an outer side around an inspection opening (4) to be closed. An inspection cover (6) completely covers an opening (7) of the frame in its fixed condition. The frame and cover are made of a fire protection material. The cover and frame are connected with each other using metal screw connections (8) in a force-fit manner. The connections are arranged such that they are provided before a wall, which is made of a fire protection material, in an assembling device. The opening (7) corresponds to dimensions of the opening (4).