Universal mounting enclosure for site cast concrete or prefabricated concrete structure, for the installation of LV/HV/LED luminaires. suitable for adhesive fixing and opposing formwork, for installation in ceilings from 180mm, wall installation with IBT support spars, recommended accessories for mounting in in-situ concrete applications: nailing tool NAH IBTronic H120 order no. 979 218 01, use 4 support spars STH each for support spar technology, for the installation of VDE-approved lights per DIN EN 60598 (VDE 0711), as well as with F identification or MM identification, max. installation height LV lights: 120mm, HV lights: 125mm, lamp output max. 50 W, lamp output LED max. 20 W, selectable outlet aperture: 68mm or 108 / 120mm