Gira E2 cover frame for flat installation, matt gray, 1-way Features: Shatterproof. The Gira device box allows the Gira E2 switch range to be installed flat on the wall. For cavity wall installation, e.g. in a flexible wall system, this device box can be sunk directly into the wall. For flush-mounted installation in masonry, the device box is inserted into a flush-mounted installation box and this is embedded in the wall.