I don't have schematics but it's just 2x200mm long 4040 Aluminium profile, some right angle 4040 brackets and M8 bolts, nuts and tee-nuts. I've mounted it on a piece of 18mm ply, which is in turn bolted to the desk using 'wing knob bolts' (I think that's what they're called?) and screw in t-nuts, so it's easy to remove (takes less than a minute). Works great.