Installation frame for ARTSIGN 75 P MRC (recessed ceiling) safety sign lights. Installation with edge upwards so that the ARTSIGN can be installed on ceilings with a thickness of 1 to 12 mm. Installation with edge downwards: as edge protection for plasterboard or fiberboard with a ceiling thickness of approx. 25 mm. Galvanized sheet steel, installation on the back, fastening by gluing or screwing, cut-out dimensions: 180+/-2 x 49+/-1 mm, dimensions: 260 x 70 x 25 mm, weight: 0.12 kg