Quick replaceable ground frame for protecting floor covering at cut edge of inspection opening of e.g. fire alarm in office, is formed by welding set of T-profiles together, where frame is fixed at inspection cover by screws

摘要

The frame is formed by welding a set of T-profiles together, where the T-profiles are made of metal such as aluminum, stainless steel, iron and copper. The frame is fixed at an inspection cover by screws, such that the frame is removable in a quick manner, when a floor covering is damaged or during replacement of the floor covering.