What is a Glass Replacement Unit?
A Glass Replacement Unit (GRU) is an extra hoisting system integrated in the roof car, which suspends a hook between the gondola and the facade. Despite the fact that this extra hook can be used for a variety of purposes, it is mostly used to hoist window panels. When the GRU is used for glass replacement, a suction tool is attached to the hook.
Without a GRU, the BMU cannot be used to transport large or heavy materials to a higher level. When the BMU is the only means of access to the outer facade of the building, a GRU is recommended. This is often the case with roofless buildings, or buildings that are simply too tall to rely on other means of facade access.
Watch the video on the right to see how a GRU can be used for glass replacement.