The Schneider Electric DOMH12104F is an empty enclosure from the Domae range, sized for 4 MCB modules. It mounts flush into a wall or panel cutout, with dimensions of 222 mm height, 136 mm width, and 92 mm depth.
Built to EN 60439-3, the standard for distribution enclosures intended for installation by ordinary persons. That covers the mechanical strength, thermal limits, and protection against electric shock for a fixed, flush-mounted housing. The DOMH12104F carries no internal components — it is a shell you populate with DIN-rail mounted MCBs, RCDs, or other modular devices.