The PT4IM is a prototype board with 4 iMod ports and prototyping space. Each iMod port has space for standard 0.7“, or wide 0.9” iMod modules. An additional 5th iMod can be mounted on the left side of the board.
This board is 72mm wide, and can be assembled in a 72mm DIN rail PCB carrier. They are available from many sources.