Universal ceiling box for concrete installation, suitable for slab ceilings up to 4.5 cm thick, with M5 threaded socket and a load capacity of 10 kg for the attachment of a ceiling hook, VDE certified according to DIN EN 60670 VDE 0606. Maximum lamp power for LED is W, maximum lamp power for halogen is 6.5 W. The use of the U86 as a luminaire installation housing in large components, such as element ceilings or filigree ceilings, does not comply with the recognized state of the art. The permissible installation tolerances do not generally allow for precise installation. 2-part, for nail and magnet fastening U 86 DVD-2.