Suitable for surface mounting and installation in cable duct or floor tank. Can be combined with covers from various switch range manufacturers when using an AMJ45 socket without central plate. Up to three boxes fit into one floor tank device casing. Cable feed from eight possible directions in 45° steps and pluggable earth connection at all four corners. Optional horizontal and vertical installation in the parapet trunking due to variable cable entry. Design with low installation depth; trouble-free installation in the floor tank due to lateral cable routing inside the device casing. Fully shielded metal housing. Surface mounting requires surface mounting frame set 25.16.8555. Flush mounting requires cover frame single 25.16.8560 or cover frame double 25.16.8565. The universal device mounting bracket 25.16.8557 enables an easy and space-saving installation of the connection boxes in a parapet trunking system. Suitable for trunking systems of various manufacturers, e.g. Ackermann, Jung.