RMS mount compatibility with aluminium profile

[mmorriso]

Hello Reefers!

I currently have my 3 ReeFi lights installed across my tank using a 120cm / 4 foot RMS rail suspended from my ceiling (Lights have RMS mounts)

I would like to build a canopy / shroud out of extruded aluminium and was wondering if anyone had found a standard aluminium extrusion profile that was known to be compatible with RMS mounts?

Thanks for any assistance!