J'hsiterais fill it with deep racks trs heavy (like old analog modules), but I think tration supports a total load of 60 kg. I think I got lucky at the price ... He cot 26 euros. I fell short of screws (there were only 24 with I think), a screw rapprovisionnement expressment sold by Stagg for their racks cot me less than 1 euro!
Hsiter again without a choice. I achter a deuxime if ncessaire. For example, to a mixer.