Universal device carrier for flush-mounted devices with frame for SL 20x55mm traffic white. Device carrier for the electrical installation duct system skirting board duct in accordance with DIN EN 50085-1 as a device installation duct. Empty device carrier for snapping onto the skirting board duct lower section consisting of device carrier lower section with locking screw for installing suitable flush-mounted switch programs with designer frame and device carrier upper section. Note: Device carrier apron is not required.