The mounting box is designed for concrete and brick walls. It consists of item AU3.2 modified with a 28 mm high extension ring. No branch inlets are required at the bottom of the box - straight access from side makes wiring easier, with piping or cable. Made of halogen free material (IEC/61249-2-21) and fulfills the requirements of the glow wire test according to the standard EC/EN60670: 2005 (850 °C).