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Not necessarily, that's keyklamp or something similar, the flanges are solid and as a system it's designed for handrails etc. If you're really after a solid fixing then expanding bolts or threaded bar with chemfix (properly applied) will hold it very solidly (chin up bar solid). If all 4 holes in the flanges have proper fixings with good screws and heavy duty plugs then it should hold.
+1 @Mickie_Cricket, if there's no bracing of that unit above or below then those tiny flanges won't hold it regardless of what you fix it with.