The universal large box can be used in in-situ concrete and in factory production as a device junction box, ceiling junction box, wing concrete box or electronics box. An optional divider enables the installation of two separate circuits. Can be used with or without wings, the concrete box offers plenty of terminal space. The M20 to M40 entries with membrane technology ensure safe strain relief and guarantee absolute concrete tightness. Various front parts with 60 or 70 mm diameter increase flexibility during installation.