Electrical wall box for ARCELI Dual socket

Electrical wall box for ARCELI Dual socket with USB. this is an dual socket box witch is narrower then normal sockets.The user of normale wall boxes didnt work, the units are to close.Also i needed one with less depht so i created this one. Inside dimentions 120mm * 63mm.M3 inserts should be melted in on the end. (just 2)the m3 holes have a small cutout to make it fit perfectly. Top, bottem and backside have 2 holes to secure the box to the back of the wall of to the wood structure. Going to use this for getting 2 outlets next to the bed on both sides with Acoustic panels.Depth total 33mmInside depth 32mm When boxes are installed i will add a photo.Still waiting for some other parts before i start the installation.