Relates as the subject innovation, for example, an apartment or a building such as a building partition electrical wires to be wire construction when the inner wall, a telephone line or a TV antenna line, such as the dispersion and indoor wiring connection built with concrete so as to be connected, later in the center of the body (1) of the opening (2), reinforced hook 4 and the rear along the edge four pawls (5) of the third pair that is supported by a reinforcement on upper and lower surfaces are each formed in the body (1) that the outlet is mounted the upper surface of case 6 coupled to the rear forming two bolts connecting pipe (7), when applying a constant force to correspond thereto, and the engaging projection 10 in Figure 2, one side of Lot-out hole 8 formed in the the combination of the other surface which grooves 11, four grooves (9), which are mutually coupled with the locking jaw (5) along a joint projection (12) and, edges on the back face center are respectively formed in the body 1 and the casing is also connected to the building wiring, characterized in that the integrated (6).
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