Mounting in a 19" Rack
MarketSpark M1 and M2 solutions are primarily designed to be wall mounted on a wall, however there is nothing that would inherently prevent those same solutions from being mounted on a shelf in an equipment rack using something like the following:
Shelves such as the one shown above are designed to be put into a 19" rack and have a usable width of approximately 17.2". Shelves like these are fine if there is plenty of clearance ( >8" or 5U for M1; > 12" or 7U for M2) above the equipment to accommodate the opening of the enclosure door. For installations that are more space constrained, the use of a sliding tray/shelf that can be pulled out for servicing the units is recommended.
Due to the size of the M1 and M2 enclosure (15.2" x 11.8" x 7.2"), only a single system can be placed on each shelf. Once installed, the shelf + enclosure takes up 5 RU (could potentially be squeezed in to a very tight 4RU):
If the shelf has ventilation holes as shown in Figure 1, then the wall mount feet can be used to secure the enclosures to the shelf. Otherwise, holes must be drilled into the shelf to secure the enclosure to the self with the wall mount feet.