cannot tell the scale but the arm holes look a bit close together, my cabinet has 160mm between them if that helps
grit collection is going to need some well fitted sloping panels in the bottom of that which will be a pleasure to fit
I used silicone on the joints when assembling mine which proved a right pain as it started peeling off in use and clogged up the grit collector but silkaflex (other seam sealers are available) seems to resist blasting so might be better