Question about Digitus DN-19 12U-6/6 Wall cabinet

What do you want to know specifically? The mounting of all racks in the rack is done with cage nuts and the appropriate screws. Except for the roof fans. In this case, I would check with the manufacturer which accessories fit and then search here with the exact manufacturer's article number, as the accessories in the Digitec shop don't always really fit. At digitus, for example, here: https://www.digitus.info/de...
Otherwise, also search for network cabinet on YouTube.