Main features: | Flush-mounted, deep, for hollow walls, with flexible membranes 2 fixing points 2 Mounting screws, 2 special screws with holders to fastening to the wall - included | Flush-mounted, deep, for hollow walls flammability index : 850 °C 2 fixing points 2 Mounting screws, 2 special screws with holders to fastening to the wall - included |