Metal Shielding Work. An RF shielded enclosure is a “system” comprised of interacting components (e.g., doors , windows, electrical RF filters for power and signal lines, and mechanical penetrations for water, honeycomb air vents for HVAC, sprinklers for fire protection) that when integrated provides a functional shield barrier that reduces an RF noise source to an acceptable level. An essential part of a shielded system is that it be designed with the appropriate conductive materials, that when bonded together achieve a six-sided-box (i.e., walls, ceiling, floor), referred to as a “Faraday Cage”. The purpose of RF Shielding is to reduce levels of electromagnetic emissions. One reason is to contain the RF energy within a shielded enclosure, such as sensitive information from being transmitted outside of the shielded facility or room. Another reason is to exclude external RF noise from getting into the shielded enclosure to protect sensitive equipment or test environments from being adversely affected by external RF noise sources.