With the new O-range ECON Fix device connection box, installation is much faster and easier thanks to the flange-free clamping ribs in different wall material combinations such as OSB panels, cross laminate or solid wood, plasterboard or even in exposed masonry. All-round sealing ribs on two levels maintain the airtight layer. Due to the applied centring points, exact and convenient mounting of the device connection box in the installation opening is possible without tilting. INSERT - ALIGN - CLAMP - DONE!