Shows my research ;). But, still, have such glass-walled been tested for ESD/RF, if they are not sold as systems? Or are those transparent parts made of some R

Shows my research ;). But, still, have such glass-walled been tested for ESD/RF, if they are not sold as systems? Or are those transparent parts made of some RF-blocking material? Surely a vendor such as HP would have the paperwork to show that their cases are tested with their motherboards, but a small system builder company (e.g. PC component seller that can also assemble the system) probably would not have done such testing..