Inspection shaft for cisterns

摘要

The cistern has a revision opening provided in a box body and connected by an inspection chamber (1) with an outer side of a wall. A holding frame is fastened in the area of the revision opening. A cover plate is detachably fastened to the holding frame. The revision opening is shortened for adapting to different installation depths corresponding to the wall thickness, and screws for fastening the holding frame are provided at the revision opening independent of the wall thickness.