Soundcraft SM-20 MASTER MOTHERBOARD SC3909 ISS 4 PCB The original plastic ones are

The original plastic ones are actually not made very well and a few thou out though it does not pull them too far away on the wow and flutter specs

The condition of some these panels is not 100% perfect as at the sides of the panels there is some slight chipping at the bends

But maybe someone has even worse than these in that case its useful this is the 9 way one

not sure if these were common on all models but people search by model number so thats how I have listed this

Soundcraft SM-20 MASTER MOTHERBOARD SC3909 ISS 4 PCB The original plastic ones areMother board from the SM 20 Heavy contact for post options I have one board in the UK without the cables so could ship from there as can be cheaper faster for post