The COMBI 304 is made of high-quality material. It is characterized by a high UV and ozone resistance, and is therefore suitable for indoor and outdoor applications. With the use of cable glands, protection class IP67 is even achieved. The cover with bayonet lock is screwed on with a quarter turn. A hook lock prevents unauthorized access. Opening of the lid with the help of a tool Two external fastening tabs for easy installation, as well as 4 x M20 combined thread and membrane entries.