Please see below product manager’s response regarding if a certain product attribute or material works best for 5G shielding:
“The RF shielding is to make a faraday cage for all wavelengths. The customer should select for the sub straights and test some materials to assure that it achieves the desired results. Long and short, the shielding is for “all” wavelengths.”
-From my understanding, the more conductive the material the better shielding qualities it will have.